What is the Greatest Common Factor of 42570 and 42581?

Greatest common factor (GCF) of 42570 and 42581 is 11.

GCF(42570,42581) = 11

We will now calculate the prime factors of 42570 and 42581, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42570 and 42581.

How to find the GCF of 42570 and 42581?

We will first find the prime factorization of 42570 and 42581. After we will calculate the factors of 42570 and 42581 and find the biggest common factor number .

Step-1: Prime Factorization of 42570

Prime factors of 42570 are 2, 3, 5, 11, 43. Prime factorization of 42570 in exponential form is:

42570 = 2¹ × 3² × 5¹ × 11¹ × 43¹

Step-2: Prime Factorization of 42581

Prime factors of 42581 are 7, 11, 79. Prime factorization of 42581 in exponential form is:

42581 = 7² × 11¹ × 79¹

Step-3: Factors of 42570

List of positive integer factors of 42570 that divides 42570 without a remainder.

1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 43, 45, 55, 66, 86, 90, 99, 110, 129, 165, 198, 215, 258, 330, 387, 430, 473, 495, 645, 774, 946, 990, 1290, 1419, 1935, 2365, 2838, 3870, 4257, 4730, 7095, 8514, 14190, 21285

Step-4: Factors of 42581

List of positive integer factors of 42581 that divides 42570 without a remainder.

1, 7, 11, 49, 77, 79, 539, 553, 869, 3871, 6083

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42570 and 42581. The biggest common factor number is the GCF number.
So the greatest common factor 42570 and 42581 is 11.

Also check out the Least Common Multiple of 42570 and 42581