What is the Greatest Common Factor of 12638 and 12658?

Greatest common factor (GCF) of 12638 and 12658 is 2.

GCF(12638,12658) = 2

We will now calculate the prime factors of 12638 and 12658, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12638 and 12658.

How to find the GCF of 12638 and 12658?

We will first find the prime factorization of 12638 and 12658. After we will calculate the factors of 12638 and 12658 and find the biggest common factor number .

Step-1: Prime Factorization of 12638

Prime factors of 12638 are 2, 71, 89. Prime factorization of 12638 in exponential form is:

12638 = 2¹ × 71¹ × 89¹

Step-2: Prime Factorization of 12658

Prime factors of 12658 are 2, 6329. Prime factorization of 12658 in exponential form is:

12658 = 2¹ × 6329¹

Step-3: Factors of 12638

List of positive integer factors of 12638 that divides 12638 without a remainder.

1, 2, 71, 89, 142, 178, 6319

Step-4: Factors of 12658

List of positive integer factors of 12658 that divides 12638 without a remainder.

1, 2, 6329

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12638 and 12658. The biggest common factor number is the GCF number.
So the greatest common factor 12638 and 12658 is 2.

Also check out the Least Common Multiple of 12638 and 12658