What is the Greatest Common Factor of 42970 and 42986?

Greatest common factor (GCF) of 42970 and 42986 is 2.

GCF(42970,42986) = 2

We will now calculate the prime factors of 42970 and 42986, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42970 and 42986.

How to find the GCF of 42970 and 42986?

We will first find the prime factorization of 42970 and 42986. After we will calculate the factors of 42970 and 42986 and find the biggest common factor number .

Step-1: 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-2: Prime Factorization of 42986

Prime factors of 42986 are 2, 21493. Prime factorization of 42986 in exponential form is:

42986 = 2¹ × 21493¹

Step-3: Factors of 42970

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

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

Step-4: Factors of 42986

List of positive integer factors of 42986 that divides 42970 without a remainder.

1, 2, 21493

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42970 and 42986. The biggest common factor number is the GCF number.
So the greatest common factor 42970 and 42986 is 2.

Also check out the Least Common Multiple of 42970 and 42986