What is the Greatest Common Factor of 65915 and 65920?

Greatest common factor (GCF) of 65915 and 65920 is 5.

GCF(65915,65920) = 5

We will now calculate the prime factors of 65915 and 65920, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 65915 and 65920.

How to find the GCF of 65915 and 65920?

We will first find the prime factorization of 65915 and 65920. After we will calculate the factors of 65915 and 65920 and find the biggest common factor number .

Step-1: Prime Factorization of 65915

Prime factors of 65915 are 5, 13183. Prime factorization of 65915 in exponential form is:

65915 = 5¹ × 13183¹

Step-2: Prime Factorization of 65920

Prime factors of 65920 are 2, 5, 103. Prime factorization of 65920 in exponential form is:

65920 = 2⁷ × 5¹ × 103¹

Step-3: Factors of 65915

List of positive integer factors of 65915 that divides 65915 without a remainder.

1, 5, 13183

Step-4: Factors of 65920

List of positive integer factors of 65920 that divides 65915 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 103, 128, 160, 206, 320, 412, 515, 640, 824, 1030, 1648, 2060, 3296, 4120, 6592, 8240, 13184, 16480, 32960

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 65915 and 65920. The biggest common factor number is the GCF number.
So the greatest common factor 65915 and 65920 is 5.

Also check out the Least Common Multiple of 65915 and 65920