What is the Greatest Common Factor of 17715 and 17721?

Greatest common factor (GCF) of 17715 and 17721 is 3.

GCF(17715,17721) = 3

We will now calculate the prime factors of 17715 and 17721, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 17715 and 17721.

How to find the GCF of 17715 and 17721?

We will first find the prime factorization of 17715 and 17721. After we will calculate the factors of 17715 and 17721 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 17721

Prime factors of 17721 are 3, 11, 179. Prime factorization of 17721 in exponential form is:

17721 = 3² × 11¹ × 179¹

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 17721

List of positive integer factors of 17721 that divides 17715 without a remainder.

1, 3, 9, 11, 33, 99, 179, 537, 1611, 1969, 5907

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 17715 and 17721. The biggest common factor number is the GCF number.
So the greatest common factor 17715 and 17721 is 3.

Also check out the Least Common Multiple of 17715 and 17721