What is the Greatest Common Factor of 17715 and 17720?

Greatest common factor (GCF) of 17715 and 17720 is 5.

GCF(17715,17720) = 5

We will now calculate the prime factors of 17715 and 17720, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 17715 and 17720.

How to find the GCF of 17715 and 17720?

We will first find the prime factorization of 17715 and 17720. After we will calculate the factors of 17715 and 17720 and find the biggest common factor number .

Step-1: Prime Factorization of 17715

Prime factors of 17715 are 3, 5, 1181. Prime factorization of 17715 in exponential form is:

17715 = 3¹ × 5¹ × 1181¹

Step-2: Prime Factorization of 17720

Prime factors of 17720 are 2, 5, 443. Prime factorization of 17720 in exponential form is:

17720 = 2³ × 5¹ × 443¹

Step-3: Factors of 17715

List of positive integer factors of 17715 that divides 17715 without a remainder.

1, 3, 5, 15, 1181, 3543, 5905

Step-4: Factors of 17720

List of positive integer factors of 17720 that divides 17715 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40, 443, 886, 1772, 2215, 3544, 4430, 8860

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 17715 and 17720. The biggest common factor number is the GCF number.
So the greatest common factor 17715 and 17720 is 5.

Also check out the Least Common Multiple of 17715 and 17720