What is the Greatest Common Factor of 77165 and 77180?

Greatest common factor (GCF) of 77165 and 77180 is 5.

GCF(77165,77180) = 5

We will now calculate the prime factors of 77165 and 77180, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 77165 and 77180.

How to find the GCF of 77165 and 77180?

We will first find the prime factorization of 77165 and 77180. After we will calculate the factors of 77165 and 77180 and find the biggest common factor number .

Step-1: Prime Factorization of 77165

Prime factors of 77165 are 5, 11, 23, 61. Prime factorization of 77165 in exponential form is:

77165 = 5¹ × 11¹ × 23¹ × 61¹

Step-2: Prime Factorization of 77180

Prime factors of 77180 are 2, 5, 17, 227. Prime factorization of 77180 in exponential form is:

77180 = 2² × 5¹ × 17¹ × 227¹

Step-3: Factors of 77165

List of positive integer factors of 77165 that divides 77165 without a remainder.

1, 5, 11, 23, 55, 61, 115, 253, 305, 671, 1265, 1403, 3355, 7015, 15433

Step-4: Factors of 77180

List of positive integer factors of 77180 that divides 77165 without a remainder.

1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 227, 340, 454, 908, 1135, 2270, 3859, 4540, 7718, 15436, 19295, 38590

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 77165 and 77180. The biggest common factor number is the GCF number.
So the greatest common factor 77165 and 77180 is 5.

Also check out the Least Common Multiple of 77165 and 77180