What is the Greatest Common Factor of 916 and 920?

Greatest common factor (GCF) of 916 and 920 is 4.

GCF(916,920) = 4

We will now calculate the prime factors of 916 and 920, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 916 and 920.

How to find the GCF of 916 and 920?

We will first find the prime factorization of 916 and 920. After we will calculate the factors of 916 and 920 and find the biggest common factor number .

Step-1: Prime Factorization of 916

Prime factors of 916 are 2, 229. Prime factorization of 916 in exponential form is:

916 = 2² × 229¹

Step-2: Prime Factorization of 920

Prime factors of 920 are 2, 5, 23. Prime factorization of 920 in exponential form is:

920 = 2³ × 5¹ × 23¹

Step-3: Factors of 916

List of positive integer factors of 916 that divides 916 without a remainder.

1, 2, 4, 229, 458

Step-4: Factors of 920

List of positive integer factors of 920 that divides 916 without a remainder.

1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 916 and 920. The biggest common factor number is the GCF number.
So the greatest common factor 916 and 920 is 4.

Also check out the Least Common Multiple of 916 and 920