What is the Greatest Common Factor of 91715 and 91720?

Greatest common factor (GCF) of 91715 and 91720 is 5.

GCF(91715,91720) = 5

We will now calculate the prime factors of 91715 and 91720, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 91715 and 91720.

How to find the GCF of 91715 and 91720?

We will first find the prime factorization of 91715 and 91720. After we will calculate the factors of 91715 and 91720 and find the biggest common factor number .

Step-1: Prime Factorization of 91715

Prime factors of 91715 are 5, 13, 17, 83. Prime factorization of 91715 in exponential form is:

91715 = 5¹ × 13¹ × 17¹ × 83¹

Step-2: Prime Factorization of 91720

Prime factors of 91720 are 2, 5, 2293. Prime factorization of 91720 in exponential form is:

91720 = 2³ × 5¹ × 2293¹

Step-3: Factors of 91715

List of positive integer factors of 91715 that divides 91715 without a remainder.

1, 5, 13, 17, 65, 83, 85, 221, 415, 1079, 1105, 1411, 5395, 7055, 18343

Step-4: Factors of 91720

List of positive integer factors of 91720 that divides 91715 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40, 2293, 4586, 9172, 11465, 18344, 22930, 45860

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 91715 and 91720. The biggest common factor number is the GCF number.
So the greatest common factor 91715 and 91720 is 5.

Also check out the Least Common Multiple of 91715 and 91720