15=3* 5 45=3^ 2 100=2 ^ 2 * 5 ^ 2. So the Greatest Common Factor for 14 and 15 is 1. Find the prime factorization of 15. It is not difficult to see that the 'Greatest Common Factor' or 'Divisor' for 10, 12 and 15 is 1. As we can see there is only one Prime Factor common to both numbers. The second method to find GCF for numbers 5 and 15 is to list all Prime Factors for both numbers and multiply the common ones: All Prime Factors of 5: 5. From the above two lists, we can see the only common factor between 15 and 16 is 1. So, as we can see, the Greatest Common Factor or Divisor is 1, because it is the greatest number that divides evenly into all of them. Step 2: Find the prime factorization of 15. In our previous example, the largest of the common factors is 15, so the Greatest Common Factor of 15, 30 and 105 is 15. Find the prime factorization of 40. The GCF of 15 is 5, and the calculator shows the steps and explanations for how to arrive at this result. It is 3. GCF of 15 and 18 is the largest possible number that divides 15 and 18 exactly without any remainder. The second method to find GCF for numbers 12 and 15 is to list all Prime Factors for both numbers and multiply the common ones: All Prime Factors of 12: 2, 2, 3. Factors of 35,640 are: 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 27, 30, 33, 36, 40, 44, 45, 54, 55, 60, 66, 72, 81, 88, 90, 99,. Enter two or more numbers in the box. Step 2: Since the remainder = 0, the divisor (15) is the GCF of 15 and 60. All Prime Factors of 40: 2, 2, 2, 5. The GCF of 15, 20, and 35 is 5. As we can see there is only one Prime Factor common to both numbers. Prime factorization of 15 in exponential form is: 15 = 3 1 ×5 1. Final Step: Biggest Common Factor Number. Step 1: Find the prime factorization of 15. Answer: Greatest Common Factor of 15 and 40 = 5. What is the "Greatest Common Factor" ?. All Prime Factors of 15: 3, 5. One even one odd: = 2³ × gcf(4455, 2079). Final Step: Biggest Common Factor Number. The second method to find GCF for numbers 15 and 90 is to list all Prime Factors for both numbers and multiply the common ones: All Prime Factors of 15: 3, 5. The GCF can be found using a variety of methods, including prime factorization and division. Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf: GCF = 5. Step 1: Divide 27 (larger number) by 15 (smaller number). Step 2: Find the prime factorization of 24. Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf: GCF = 5. Final Step: Biggest Common Factor Number. Step 2: Since. Step 1: Find the prime factorization of 15. The GCF, or Greatest Common Factor, of two or more numbers is the largest number that evenly divides into all numbers being considered. It is 5. Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf: GCF = 3. Learn more about GCF with. Explanation: The factors of 15 are 1,3,5,15; The factors of 25 are 1,5,25. Factors for 21: 1, 3, 7, and 21. Step 3: Repeat this process until the remainder = 0. What is the Greatest Common Factor of 15 and 81? The greatest common factor (GCF) of a set of numbers is the largest positive integer that divides each of the numbers evenly. GCF of 15 and 64 by Listing Common Factors. Explanation: The factors of 15 are 1,3,5,15; The factors of 25 are 1,5,25. Step 1 - Represent the numbers in the prime factored form. To find the GCF, multiply all the prime factors common to both numbers: Therefore, GCF = 3 × 5. So the Greatest Common Factor for 15 and 28 is 1. Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf: GCF = 3 x 5 = 15. The second method to find GCF for numbers 6 and 15 is to list all Prime Factors for both numbers and multiply the common ones: All Prime Factors of 6: 2, 3. 25 = 5 x 5. 1, 3, 5. This process will be used in later lessons on factoring a GCF from an algebraic expression, and on simplifying fractions. The GCF, or Greatest Common Factor, of two or more numbers is the largest number that evenly divides into all numbers being considered. Step 2: Since the remainder ≠ 0, we will divide the divisor of step 1 (6) by the remainder (3). 45 = 3 x 3 x 5. It is 5. This calculator factors a set of positive integers to find the common factors (common divisors) of those integers. Use the GCF Calculator to find the greatest common factor (GCF) of 15 and other integers. 25 = 5 x 5. For 15 and 35 those factors look like this: Factors for 15: 1, 3, 5, and 15. This calculator factors a set of positive integers to find the common factors (common divisors) of those integers. All Prime Factors of 15: 3, 5. Solution: ∵ LCM × GCF = 5 × 15. So the greatest common factor 11 and 15 is 1. Step 4: Therefore, the greatest common factor of 20 and 15 is 5. 30 = 2 x 3 x 5. GCF, which stands for "Greatest common factor", is the largest value of the values you have, that multiplied by whole number is able to "step onto both". Factors for 45: 1, 3, 5, 9, 15, and 45. So the Greatest Common Factor for 15 and 16 is 1. The second method to find GCF for numbers 15 and 60 is to list all Prime Factors for both numbers and multiply the common ones: All Prime Factors of 15: 3, 5. To find the GCF, multiply all the prime factors common to both numbers: Therefore, GCF = 5. 1, 3, 5, 15. Nov 1, 2022 · The GCF of 15 and 20 is 5. The factors of 15 and 18 are 1, 3, 5, 15 and 1, 2, 3, 6, 9, 18 respectively. What is the Greatest Common Factor of 15 and 81? The greatest common factor (GCF) of a set of numbers is the largest positive integer that divides each of the numbers evenly. Step 3: Repeat this process until the remainder = 0. The GCF of 15 and 18 is 3. List of positive integer factors of 15 that divides 15 without a remainder. So the greatest common factor 15 and 19 is 1. Apr 6, 2023 · Step 2: Find the prime factorization of 15. Highest common occurrences in the given inputs are 3 1 x 5 1. Step 1: Find the prime factorization of 15. 20 = 2 x 2 x 5. 20 = 2 × 2 × 5. GCF (15,60) = 15. 5 problems similar to: 5 problems similar to: Learn about greatest common factor using our free math solver with step-by-step solutions. All factors of 64: 1, 2, 4, 8, 16, 32, 64. To find the GCF of numbers using factoring list out all the factors of each number. Step 2: Since the remainder ≠ 0, we will divide the divisor of step 1 (15) by the remainder (12). Answer: Greatest Common Factor of 10 and 15 = 5. 24 = 2 x 2 x 2 x 3. color (white) () One way to find this is to break down these two numbers into their prime factorisations: 12 = 2 xx 2 xx 3 15 = 3 xx 5 We see that the only common factor (greater than 1) is 3, so that is the greatest common factor. Step 4: Therefore, the greatest common factor of 15 and 21 is 3. One way to approach this is to look at the difference between 15 and 20, which is 5. As we can see there is only one Prime Factor common to both numbers. The first method to find GCF for numbers 15 and 64 is to list all factors for both numbers and pick the highest common one: All factors of 15: 1, 3, 5, 15. The GCF is the largest common positive integer that divides all the numbers (10,12,15) without a remainder. 15 = 3 x 5. So the greatest common factor 6 and 15 is 3. All factors of 28: 1, 2, 4, 7, 14, 28. Step 2: Since the remainder = 0, the divisor (15) is the GCF of 15 and 45. Final Step: Biggest Common Factor Number. 1, 3, 5, 15. So 3 is the Greatest Common Factor of 6 and 15. The second method to find GCF for numbers 15 and 36 is to list all Prime Factors for both numbers and multiply the common ones: All Prime Factors of 15: 3, 5. We found the factors and prime factorization of 15 and 32. How to Find the GCF of 15 and 24? Answer: Greatest Common Factor of 15 and 24 = 3. The factors of 9 and 15 are 1, 3, 9 and 1, 3, 5, 15 respectively. So the greatest common factor 15 and 45 is 15. We found the factors and prime factorization of 15 and 23. Greatest common factor (GCF) of 15 and 5 is 5. In any case, the easiest way to compute the result for two numbers like 15 and 45 is by using our calculator above. Given Input numbers are 15, 20, 30. GCF of 15 and 64 by Listing Common Factors. 15 = 3 × 5. So the greatest common factor 15 and 45 is 15. Step 1: Find the prime factorization of 8. Factors of 35,640 are: 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 27, 30, 33, 36, 40, 44, 45, 54, 55, 60, 66, 72, 81, 88, 90, 99,. Step 1: Divide 15 (larger number) by 11 (smaller number). 15 = 3 x 5. Also check out the Least Common Multiple of 15 and 45. As you can see when you list out the factors of each number, 1 is the greatest number that 15 and 22. 1, 3, 5, 15 Factors of 20. Find the prime factorization of 20. This calculator factors a set of positive integers to find the common factors (common divisors) of those integers. 15 = 3 x 5. What is the Greatest Common Factor of 15 and 19? Answer: GCF of 15 and 19 is 1. All factors of 15: 1, 3, 5, 15. Free GCF Calculator that gives Greatest Common Factor of numbers 6, 15 i. Step 3: Repeat this process until the remainder = 0. Explanation: The factors of 15 are 1,3,5,15; The factors of 25 are 1,5,25. For example, in: 3 × 4 = 12, 3 and 4 are the factors. We will now calculate the prime factors of 15 and 56, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15 and 56. Factors for 2: 1 and 2. As we can see there are Prime Factors common to both numbers: 3, 5. Also check out the Least Common Multiple of 15 and 25. We found the factors and prime factorization of 15 and 28. The prime factorization of 45 is: 3 x 3 x 5. First off, if you're in a rush, here's the answer to the question "what is the GCF of 15 and 30?". For example, 12, 20, and 24 have two common factors: 2 and 4. Also check out the Least Common. The second method to find GCF for numbers 15 and 100 is to list all Prime Factors for both numbers and multiply the common ones: All Prime Factors of 15: 3, 5. Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf: GCF = 3. All Prime Factors of 15: 3, 5. The corresponding divisor (15) is the GCF of 15 and 45. The biggest common factor number is the GCF number. Ex: number 1 - 1500 and number 2 - 20. The second method to find GCF for numbers 15 and 60 is to list all Prime Factors for both numbers and multiply the common ones: All Prime Factors of 15: 3, 5. Step 1: Divide 50 (larger number) by 15 (smaller number). GCF of 15 and 45 is the largest possible number that divides 15 and 45 exactly without any remainder. Make a list of Prime Factors of all the given numbers initially. The greatest common factor (GCF) is the largest positive integer that is a factor of two or more integers. The GCF, or Greatest Common Factor, of two or more numbers is the largest number that evenly divides into all numbers being considered. All Prime Factors of 21: 3, 7. GCF of 15 and 45 by Long Division. 15 = 3 x 5. First off, if you're in a rush, here's the answer to the question "what is the GCF of 15, 20, and 30?". ⇒ Factors of 10 and 15: Factors of 10 = 1, 2, 5, 10. Factors of 20. You could just list out the. Greatest common factor examples. You have only one number in the question! The greatest factor of any number is itself. We found the factors and prime factorization of 36 and 15. 8 = 2 x 2 x 2 x 2. Step 4: Therefore, the greatest common factor of 9 and 15 is 3. There are. GCF of 15 and 60 is the divisor that we get when the remainder becomes 0 after doing long division repeatedly. For 15, 20, and 25 those factors look like this: Factors for 15: 1, 3, 5, and 15. Finding GCF for 5 and 15 by Prime Factorization. The GCF of 15 and 20 is 5. Factors for 15: 1, 3, 5, and 15. The corresponding divisor (15) is the GCF of 15 and 60. ☛ Also Check: GCF of 48 and 120 = 24; GCF of 24 and 64 = 8; GCF of. So 3 is the Greatest Common Factor of 12 and 15. Free GCF Calculator that gives Greatest Common Factor of numbers 6, 15 i. The biggest common factor number is the GCF number. So, as we can see, the Greatest Common Factor or Divisor is 5, because it is the greatest number that divides evenly into all of them. It is 5. For 15, 18, and 21 those factors look like this: Factors for 15: 1, 3, 5, and 15. We found the factors and prime factorization of 15 and 32. Finding GCF for 15 and 64 using all factors (divisors) listing. Also check out the Least Common Multiple of 6 and 15. Factors for 25: 1, 5, and 25. Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf: GCF = 5. So 5 is the Greatest Common Factor of 10 and 15. As we can see there is only one Prime Factor common to both numbers. Ex: number 1 - 1500 and number 2 - 20. 3 The GCF of 12 and 15 is 3. It is 5. Greatest Common Factor. 5 largest integer that divides both the. The Greatest Common Factor of 15 and 64 is 1. Free GCF Calculator that gives Greatest Common Factor of numbers 6, 15 i. List of positive integer factors of 15 that divides 9 without a remainder. 15 = 3 x 5. Factors for 15: 1, 3, 5, and 15. The GCF of given numbers is the largest possible number which divides those numbers. Answer link. As we can see there is only one Prime Factor common to both numbers. The greatest common factor of two numbers cannot be larger than the difference between the two numbers. It's also called the greatest common divisor (GCD). Prime Factorization of 15 is 3 x 5. As we can see there is only one Prime Factor common to both numbers. So GCF is 1. Find the prime factorization of 15. Explanation: The factors of 15 are 1,3,5,15; The factors of 25 are 1,5,25. GCF of 15 and 57 by Prime Factorization. So the greatest common factor 11 and 15 is 1. All factors of 19: 1, 19. GCF (15) = 15. Step 2: Find the prime factorization of 25. 15 = 3 x 5. GCF of 15 Calculator. It is 3. GCF of 15 and 60 is the divisor that we get when the remainder becomes 0 after doing long division repeatedly. For smaller numbers you can simply look at the factors or multiples for each number and find the greatest common multiple of them. GCF of 11 and 15 by Long Division. Finding GCF of 7, 15, 21 using Prime Factorization. GCF of 6 and 15 by Long Division. It is 3. So the Greatest Common Factor for 14 and 15 is 1. The GCF of 15 and 18 is 3. 27 = 3 x 3 x 3. Therefore, the greatest common factor of 5 and 15 is 5. All Prime Factors of 45: 3, 3, 5. The biggest common factor number is the GCF number. Hence, the GCF of 15 and 25 is 5. Factors for 15: 1, 3, 5, and 15. We can also find the greatest common factor of three numbers or more by this method. To find the GCF of numbers using factoring list out all the factors of each number. Step 1 - Represent the numbers in the prime factored form. Step 1: Find the prime factorization of 15. ∙ 2y ago. Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf: GCF = 3. Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf: GCF = 3 x 5 = 15. Step 1: Find the prime factorization of 15. The greatest common factor or greatest common divisor of two numbers is the largest ( greatest) number ( factor) that divides the two numbers. Step 1: Divide 36 (larger number) by 15 (smaller number). The biggest common factor number is the GCF number. The GCF of 15 and 25 is 5, which is the biggest common factor number. Hence, the GCF of 15 and 25 is 5. The GCF, or Greatest Common Factor, of two or more numbers is the largest number that evenly divides into all numbers being considered. GCF Calculator. 8 = 2 x 2 x 2. Find the GCF for the numerical part 10,−15 10, - 15. Note that it can also compute the gcf of more than two numbers. celebs nude archive
Since there are no common prime factors between the numbers above, this means the greatest common factor is 1: GCF = 1. . Gcf of 15
The common factors for 15,45,60 15, 45, 60 are 1,3,5,15 1, 3, 5, 15. After that hit the 'Calculate' button. The GCF can be found using a variety of methods, including prime factorization and division. GCF of 2 and 15. First off, if you're in a rush, here's the answer to the question "what is the GCF of 15, 18, and 24?". Step 1: Find the prime factorization of 15. So the greatest common factor 15 and 34 is 1. Step 1: Find the prime factorization of 15. The GCF, or Greatest Common Factor, of two or more numbers is the largest number that evenly divides into all numbers being considered. As we can see there is only one Prime Factor common to both numbers. 3 The GCF of 12 and 15 is 3. As we can see there is only one Prime Factor common to both numbers. 20 = 2 x 2 x 5. GCF of 15 and 16 is the divisor that we get when the remainder becomes 0 after doing long division repeatedly. We found the factors and prime factorization of 6 and 15. Find the prime factorization of 40. 1, 3, 5. For smaller numbers you can simply look at the factors or multiples for each number and find the greatest common multiple of them. Step 4: Therefore, the greatest common factor of 20 and 15 is 5. We found the factors and prime factorization of 15 and 25. Learn the definition, formula, and examples of the GCF and how to use the calculator. GCF of. Step 1: Divide 50 (larger number) by 15 (smaller number). Greatest Common Factor Enter numbers less than 100000 and separated by commas , ej: 8, 128, 34, 12 Example: 120 Example: 6 y 8 Example: 24, 16, y 12 Example: 3, 12, 27, y 45 Calculate the Greatest Common Factor or GCF of 15 , 45 and 90. (One) Finding GCF for 15 and 19 using all factors (divisors) listing. Step 2: Find the prime factorization of 45. Step 2: Since the remainder ≠ 0, we will divide the divisor of step 1 (9) by the remainder (6). Given Input Data is 15, 45, 60. All Prime Factors of 100: 2, 2, 5, 5. As we can see there is only one Prime Factor common to both numbers. As we can see there is only one Prime Factor common to both numbers. The Euclidean algorithm says that if number k is the GCM of 15 and 16, then the number k is also the GCM of the division remainder of the numbers 15 and 16. Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf: GCF = 5. We found the factors and prime factorization of 15 and 40. What is the Greatest Common Factor of 15 and 36? The greatest common factor (GCF) of a set of numbers is the largest positive integer that divides each of the numbers evenly. Step 1: Divide 15 (larger number) by 12 (smaller number). Step 1: Find the prime factorization of 15. So the Greatest Common Factor for 15 and 28 is 1. Explanation: The factors of 15 are 1,3,5,15; The factors of 35 are 1,5,7,35. What is the Greatest Common Factor of 15 and 18? The greatest common factor (GCF) of a set of numbers is the largest positive integer that divides each of the numbers evenly. The prime factors of 30 are 2 x 3 x 5. Step 2: Since the remainder ≠ 0, we will divide the divisor of step 1 (15) by the remainder (1). List of positive integer factors of 15 that divides 15 without a remainder. So, as we can see, the Greatest Common Factor or Divisor is 5, because it is the greatest number that divides evenly into all of them. Find the GCF of any two or more non-zero integers using the prime factorization method or the Euclidean algorithm. Finding GCF for 2 and 15 using all factors (divisors) listing. It can also be referred to as GCD, Greatest Common Divisor or GCF, Greatest Common Factor. However, it can be tedious to find the GCF of large numbers, say 10144 and 12408, through manual calculations. ☛ Also Check: GCF of 20 and 36 = 4; GCF of 60 and 70 = 10; GCF of 48 and 16 = 16; GCF of 12. Therefore 5 is the greatest or highest common factor of 15,45 and 115. Factors of 35,640 are: 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 27, 30, 33, 36, 40, 44, 45, 54, 55, 60, 66, 72, 81, 88, 90, 99,. Enter two or more numbers in the box. List all common. 25 = 5 x 5. So 5 is the Greatest Common Factor of 15 and 35. The biggest common factor number is the GCF number. Step 2: Since the remainder ≠ 0, we will divide the divisor of step 1 (15) by the remainder (5). Make use of GCF of two or more numbers calculator to determine the Greatest Common Factor of 15, 20, 40 i. The first method to find GCF for numbers 15 and 28 is to list all factors for both numbers and pick the highest common one: All factors of 15: 1, 3, 5, 15. You can refer to the Highest Common Factor for more details. Prime Factorization of 100 is 2 x 2 x 5 x 5. ☛ Also Check: GCF of 48 and 120 = 24; GCF of 24 and 64 = 8; GCF of. All Prime Factors of 36: 2, 2, 3, 3. So 5 is the Greatest Common Factor of 10 and 15. Step 1: Find the prime factorization of 15. 5 largest integer that divides both the. Greatest Common Factor. GCF of 15 and 100 by Long Division. Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf: GCF = 5. So 3 is the Greatest Common Factor of 6 and 15. What is the Greatest Common Factor of 15 and 15? The greatest common factor (GCF) of a set of numbers is the largest positive integer that divides each of the numbers evenly. So the greatest common factor 15 and 34 is 1. Step 1: Find the prime factorization of 15. Final Step: Biggest Common Factor Number. The second method to find GCF for numbers 5 and 15 is to list all Prime Factors for both numbers and multiply the common ones: All Prime Factors of 5: 5. List of positive integer factors of 15 that divides 12 without a remainder. Example 1: Find the Greatest Common Factor (GCF) of 15, 25 and 35. The prime factorization of 45 is: 3 x 3 x 5. Ex: number 1 - 1500 and number 2 - 20. As we can see there is only one Prime Factor common to both numbers. the greatest factor that two or more integers have in common. So 3 is the Greatest Common Factor of 15 and 21. All Prime Factors of 35: 5, 7. To find the GCF, multiply all the prime factors common to both numbers: Therefore, GCF = 3 × 5. Prime Factors for 12: 2, 2, and 3. GCF of 12 and 15 by Long Division. e whole number and not a decimal) that divides evenly into all of the numbers in the set. Find GCF for the numeric part, then find GCF for the variable part. The second method to find GCF for numbers 15 and 40 is to list all Prime Factors for both numbers and multiply the common ones: All Prime Factors of 15: 3, 5. ⇒ Factors of 2 and 15: Factors of 2 = 1, 2. Step 2: Find the prime factorization of 33. It's also called the greatest common divisor (GCD). Step 2: Find the prime factorization of 21. Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf: GCF = 3. 35 = 5 x 7. It is 3. Factors of 15: 1, 3, 5, 15; Factors of 64: 1, 2, 4, 8, 16, 32, 64; Since, 1 is the only common factor between 15 and 64. Click "Calculate" to see all factors of each number as well as the greatest common factor (GCF). So, as we can see, the Greatest Common Factor or Divisor is 15, because it is the greatest number that divides evenly into all of them. 25 = 5 x 5. The GCF of 27 and 72 is 9. Lvl 2. Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf: GCF = 5. Therefore, the GCF of 10 and 15 is 5. 1 largest integer that divides both. Explanation: The factors of 15 are 1,3,5,15; The factors of 35 are 1,5,7,35. Also check out the Least Common Multiple of 36 and 15. Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf: GCF = = 1. The second method to find GCF for numbers 15 and 40 is to list all Prime Factors for both numbers and multiply the common ones: All Prime Factors of 15: 3, 5. Solution: The greatest number that divides 10 and 15 exactly is their greatest common factor, i. You have reached us maybe looking for answers to the. The GCF (greatest common factor) of the numbers 15 and 16 is 1 On this page we are calculating the Greatest Common Factor of 15 and 16 To change these 15 and 16 numbers, please amend the values in the fields below:. Step 2: Since the remainder ≠ 0, we will divide the divisor of step 1 (15) by the remainder (10). The first method to find GCF for numbers 15 and 16 is to list all factors for both numbers and pick the highest common one: All factors of 15: 1, 3, 5, 15. All Prime Factors of 30: 2, 3, 5. Step 4: Therefore, the greatest common factor of 9 and 15 is 3. See the steps and the GCF calculator for more numbers. Another way to determine the greatest. The GCF of 15 is 5, and the calculator shows the steps and explanations for how to arrive at this result. Therefore, GCF of numbers 12, 15, 18 is 3. . menards table saw, casio watch models by year, jappanese massage porn, cedar rapids iowa craigslist, craiglist buffalo ny, nude wwe divas, craigslist furniture fort worth texas, truth or dare porn hub, 2002 gsxr 600 fuel pump relay location, bbc dpporn, blackpayback, epson print head replacement co8rr