What is the Greatest Common Factor of 15918 and 15931?

Greatest common factor (GCF) of 15918 and 15931 is 1.

GCF(15918,15931) = 1

We will now calculate the prime factors of 15918 and 15931, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15918 and 15931.

How to find the GCF of 15918 and 15931?

We will first find the prime factorization of 15918 and 15931. After we will calculate the factors of 15918 and 15931 and find the biggest common factor number .

Step-1: Prime Factorization of 15918

Prime factors of 15918 are 2, 3, 7, 379. Prime factorization of 15918 in exponential form is:

15918 = 2¹ × 3¹ × 7¹ × 379¹

Step-2: Prime Factorization of 15931

Prime factors of 15931 are 89, 179. Prime factorization of 15931 in exponential form is:

15931 = 89¹ × 179¹

Step-3: Factors of 15918

List of positive integer factors of 15918 that divides 15918 without a remainder.

1, 2, 3, 6, 7, 14, 21, 42, 379, 758, 1137, 2274, 2653, 5306, 7959

Step-4: Factors of 15931

List of positive integer factors of 15931 that divides 15918 without a remainder.

1, 89, 179

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15918 and 15931. The biggest common factor number is the GCF number.
So the greatest common factor 15918 and 15931 is 1.

Also check out the Least Common Multiple of 15918 and 15931