What is the Greatest Common Factor of 12956 and 12970?

Greatest common factor (GCF) of 12956 and 12970 is 2.

GCF(12956,12970) = 2

We will now calculate the prime factors of 12956 and 12970, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12956 and 12970.

How to find the GCF of 12956 and 12970?

We will first find the prime factorization of 12956 and 12970. After we will calculate the factors of 12956 and 12970 and find the biggest common factor number .

Step-1: Prime Factorization of 12956

Prime factors of 12956 are 2, 41, 79. Prime factorization of 12956 in exponential form is:

12956 = 2² × 41¹ × 79¹

Step-2: Prime Factorization of 12970

Prime factors of 12970 are 2, 5, 1297. Prime factorization of 12970 in exponential form is:

12970 = 2¹ × 5¹ × 1297¹

Step-3: Factors of 12956

List of positive integer factors of 12956 that divides 12956 without a remainder.

1, 2, 4, 41, 79, 82, 158, 164, 316, 3239, 6478

Step-4: Factors of 12970

List of positive integer factors of 12970 that divides 12956 without a remainder.

1, 2, 5, 10, 1297, 2594, 6485

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12956 and 12970. The biggest common factor number is the GCF number.
So the greatest common factor 12956 and 12970 is 2.

Also check out the Least Common Multiple of 12956 and 12970