What is the Greatest Common Factor of 42956 and 42970?

Greatest common factor (GCF) of 42956 and 42970 is 2.

GCF(42956,42970) = 2

We will now calculate the prime factors of 42956 and 42970, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42956 and 42970.

How to find the GCF of 42956 and 42970?

We will first find the prime factorization of 42956 and 42970. After we will calculate the factors of 42956 and 42970 and find the biggest common factor number .

Step-1: Prime Factorization of 42956

Prime factors of 42956 are 2, 10739. Prime factorization of 42956 in exponential form is:

42956 = 2² × 10739¹

Step-2: Prime Factorization of 42970

Prime factors of 42970 are 2, 5, 4297. Prime factorization of 42970 in exponential form is:

42970 = 2¹ × 5¹ × 4297¹

Step-3: Factors of 42956

List of positive integer factors of 42956 that divides 42956 without a remainder.

1, 2, 4, 10739, 21478

Step-4: Factors of 42970

List of positive integer factors of 42970 that divides 42956 without a remainder.

1, 2, 5, 10, 4297, 8594, 21485

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42956 and 42970. The biggest common factor number is the GCF number.
So the greatest common factor 42956 and 42970 is 2.

Also check out the Least Common Multiple of 42956 and 42970