What is the Greatest Common Factor of 23715 and 23721?

Greatest common factor (GCF) of 23715 and 23721 is 3.

GCF(23715,23721) = 3

We will now calculate the prime factors of 23715 and 23721, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 23715 and 23721.

How to find the GCF of 23715 and 23721?

We will first find the prime factorization of 23715 and 23721. After we will calculate the factors of 23715 and 23721 and find the biggest common factor number .

Step-1: Prime Factorization of 23715

Prime factors of 23715 are 3, 5, 17, 31. Prime factorization of 23715 in exponential form is:

23715 = 3² × 5¹ × 17¹ × 31¹

Step-2: Prime Factorization of 23721

Prime factors of 23721 are 3, 7907. Prime factorization of 23721 in exponential form is:

23721 = 3¹ × 7907¹

Step-3: Factors of 23715

List of positive integer factors of 23715 that divides 23715 without a remainder.

1, 3, 5, 9, 15, 17, 31, 45, 51, 85, 93, 153, 155, 255, 279, 465, 527, 765, 1395, 1581, 2635, 4743, 7905

Step-4: Factors of 23721

List of positive integer factors of 23721 that divides 23715 without a remainder.

1, 3, 7907

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 23715 and 23721. The biggest common factor number is the GCF number.
So the greatest common factor 23715 and 23721 is 3.

Also check out the Least Common Multiple of 23715 and 23721