What is the Greatest Common Factor of 42670 and 42685?

Greatest common factor (GCF) of 42670 and 42685 is 5.

GCF(42670,42685) = 5

We will now calculate the prime factors of 42670 and 42685, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42670 and 42685.

How to find the GCF of 42670 and 42685?

We will first find the prime factorization of 42670 and 42685. After we will calculate the factors of 42670 and 42685 and find the biggest common factor number .

Step-1: Prime Factorization of 42670

Prime factors of 42670 are 2, 5, 17, 251. Prime factorization of 42670 in exponential form is:

42670 = 2¹ × 5¹ × 17¹ × 251¹

Step-2: Prime Factorization of 42685

Prime factors of 42685 are 5, 8537. Prime factorization of 42685 in exponential form is:

42685 = 5¹ × 8537¹

Step-3: Factors of 42670

List of positive integer factors of 42670 that divides 42670 without a remainder.

1, 2, 5, 10, 17, 34, 85, 170, 251, 502, 1255, 2510, 4267, 8534, 21335

Step-4: Factors of 42685

List of positive integer factors of 42685 that divides 42670 without a remainder.

1, 5, 8537

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42670 and 42685. The biggest common factor number is the GCF number.
So the greatest common factor 42670 and 42685 is 5.

Also check out the Least Common Multiple of 42670 and 42685