What is the Greatest Common Factor of 5715 and 5721?

Greatest common factor (GCF) of 5715 and 5721 is 3.

GCF(5715,5721) = 3

We will now calculate the prime factors of 5715 and 5721, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 5715 and 5721.

How to find the GCF of 5715 and 5721?

We will first find the prime factorization of 5715 and 5721. After we will calculate the factors of 5715 and 5721 and find the biggest common factor number .

Step-1: Prime Factorization of 5715

Prime factors of 5715 are 3, 5, 127. Prime factorization of 5715 in exponential form is:

5715 = 3² × 5¹ × 127¹

Step-2: Prime Factorization of 5721

Prime factors of 5721 are 3, 1907. Prime factorization of 5721 in exponential form is:

5721 = 3¹ × 1907¹

Step-3: Factors of 5715

List of positive integer factors of 5715 that divides 5715 without a remainder.

1, 3, 5, 9, 15, 45, 127, 381, 635, 1143, 1905

Step-4: Factors of 5721

List of positive integer factors of 5721 that divides 5715 without a remainder.

1, 3, 1907

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 5715 and 5721. The biggest common factor number is the GCF number.
So the greatest common factor 5715 and 5721 is 3.

Also check out the Least Common Multiple of 5715 and 5721