What is the Greatest Common Factor of 72640 and 72655?

Greatest common factor (GCF) of 72640 and 72655 is 5.

GCF(72640,72655) = 5

We will now calculate the prime factors of 72640 and 72655, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 72640 and 72655.

How to find the GCF of 72640 and 72655?

We will first find the prime factorization of 72640 and 72655. After we will calculate the factors of 72640 and 72655 and find the biggest common factor number .

Step-1: Prime Factorization of 72640

Prime factors of 72640 are 2, 5, 227. Prime factorization of 72640 in exponential form is:

72640 = 2⁶ × 5¹ × 227¹

Step-2: Prime Factorization of 72655

Prime factors of 72655 are 5, 11, 1321. Prime factorization of 72655 in exponential form is:

72655 = 5¹ × 11¹ × 1321¹

Step-3: Factors of 72640

List of positive integer factors of 72640 that divides 72640 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 227, 320, 454, 908, 1135, 1816, 2270, 3632, 4540, 7264, 9080, 14528, 18160, 36320

Step-4: Factors of 72655

List of positive integer factors of 72655 that divides 72640 without a remainder.

1, 5, 11, 55, 1321, 6605, 14531

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 72640 and 72655. The biggest common factor number is the GCF number.
So the greatest common factor 72640 and 72655 is 5.

Also check out the Least Common Multiple of 72640 and 72655