What is the Greatest Common Factor of 15655 and 15670?

Greatest common factor (GCF) of 15655 and 15670 is 5.

GCF(15655,15670) = 5

We will now calculate the prime factors of 15655 and 15670, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15655 and 15670.

How to find the GCF of 15655 and 15670?

We will first find the prime factorization of 15655 and 15670. After we will calculate the factors of 15655 and 15670 and find the biggest common factor number .

Step-1: Prime Factorization of 15655

Prime factors of 15655 are 5, 31, 101. Prime factorization of 15655 in exponential form is:

15655 = 5¹ × 31¹ × 101¹

Step-2: Prime Factorization of 15670

Prime factors of 15670 are 2, 5, 1567. Prime factorization of 15670 in exponential form is:

15670 = 2¹ × 5¹ × 1567¹

Step-3: Factors of 15655

List of positive integer factors of 15655 that divides 15655 without a remainder.

1, 5, 31, 101, 155, 505, 3131

Step-4: Factors of 15670

List of positive integer factors of 15670 that divides 15655 without a remainder.

1, 2, 5, 10, 1567, 3134, 7835

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15655 and 15670. The biggest common factor number is the GCF number.
So the greatest common factor 15655 and 15670 is 5.

Also check out the Least Common Multiple of 15655 and 15670