What is the Greatest Common Factor of 91640 and 91645?

Greatest common factor (GCF) of 91640 and 91645 is 5.

GCF(91640,91645) = 5

We will now calculate the prime factors of 91640 and 91645, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 91640 and 91645.

How to find the GCF of 91640 and 91645?

We will first find the prime factorization of 91640 and 91645. After we will calculate the factors of 91640 and 91645 and find the biggest common factor number .

Step-1: Prime Factorization of 91640

Prime factors of 91640 are 2, 5, 29, 79. Prime factorization of 91640 in exponential form is:

91640 = 2³ × 5¹ × 29¹ × 79¹

Step-2: Prime Factorization of 91645

Prime factors of 91645 are 5, 18329. Prime factorization of 91645 in exponential form is:

91645 = 5¹ × 18329¹

Step-3: Factors of 91640

List of positive integer factors of 91640 that divides 91640 without a remainder.

1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 79, 116, 145, 158, 232, 290, 316, 395, 580, 632, 790, 1160, 1580, 2291, 3160, 4582, 9164, 11455, 18328, 22910, 45820

Step-4: Factors of 91645

List of positive integer factors of 91645 that divides 91640 without a remainder.

1, 5, 18329

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 91640 and 91645. The biggest common factor number is the GCF number.
So the greatest common factor 91640 and 91645 is 5.

Also check out the Least Common Multiple of 91640 and 91645