What is the Greatest Common Factor of 6915 and 6920?

Greatest common factor (GCF) of 6915 and 6920 is 5.

GCF(6915,6920) = 5

We will now calculate the prime factors of 6915 and 6920, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 6915 and 6920.

How to find the GCF of 6915 and 6920?

We will first find the prime factorization of 6915 and 6920. After we will calculate the factors of 6915 and 6920 and find the biggest common factor number .

Step-1: Prime Factorization of 6915

Prime factors of 6915 are 3, 5, 461. Prime factorization of 6915 in exponential form is:

6915 = 3¹ × 5¹ × 461¹

Step-2: Prime Factorization of 6920

Prime factors of 6920 are 2, 5, 173. Prime factorization of 6920 in exponential form is:

6920 = 2³ × 5¹ × 173¹

Step-3: Factors of 6915

List of positive integer factors of 6915 that divides 6915 without a remainder.

1, 3, 5, 15, 461, 1383, 2305

Step-4: Factors of 6920

List of positive integer factors of 6920 that divides 6915 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40, 173, 346, 692, 865, 1384, 1730, 3460

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 6915 and 6920. The biggest common factor number is the GCF number.
So the greatest common factor 6915 and 6920 is 5.

Also check out the Least Common Multiple of 6915 and 6920