What is the Greatest Common Factor of 42970 and 42985?

Greatest common factor (GCF) of 42970 and 42985 is 5.

GCF(42970,42985) = 5

We will now calculate the prime factors of 42970 and 42985, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42970 and 42985.

How to find the GCF of 42970 and 42985?

We will first find the prime factorization of 42970 and 42985. After we will calculate the factors of 42970 and 42985 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 42985

Prime factors of 42985 are 5, 8597. Prime factorization of 42985 in exponential form is:

42985 = 5¹ × 8597¹

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 42985

List of positive integer factors of 42985 that divides 42970 without a remainder.

1, 5, 8597

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42970 and 42985. The biggest common factor number is the GCF number.
So the greatest common factor 42970 and 42985 is 5.

Also check out the Least Common Multiple of 42970 and 42985