What is the Greatest Common Factor of 12642 and 12646?

Greatest common factor (GCF) of 12642 and 12646 is 2.

GCF(12642,12646) = 2

We will now calculate the prime factors of 12642 and 12646, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12642 and 12646.

How to find the GCF of 12642 and 12646?

We will first find the prime factorization of 12642 and 12646. After we will calculate the factors of 12642 and 12646 and find the biggest common factor number .

Step-1: Prime Factorization of 12642

Prime factors of 12642 are 2, 3, 7, 43. Prime factorization of 12642 in exponential form is:

12642 = 2¹ × 3¹ × 7² × 43¹

Step-2: Prime Factorization of 12646

Prime factors of 12646 are 2, 6323. Prime factorization of 12646 in exponential form is:

12646 = 2¹ × 6323¹

Step-3: Factors of 12642

List of positive integer factors of 12642 that divides 12642 without a remainder.

1, 2, 3, 6, 7, 14, 21, 42, 43, 49, 86, 98, 129, 147, 258, 294, 301, 602, 903, 1806, 2107, 4214, 6321

Step-4: Factors of 12646

List of positive integer factors of 12646 that divides 12642 without a remainder.

1, 2, 6323

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12642 and 12646. The biggest common factor number is the GCF number.
So the greatest common factor 12642 and 12646 is 2.

Also check out the Least Common Multiple of 12642 and 12646