What is the Greatest Common Factor of 7715 and 7721?

Greatest common factor (GCF) of 7715 and 7721 is 1.

GCF(7715,7721) = 1

We will now calculate the prime factors of 7715 and 7721, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 7715 and 7721.

How to find the GCF of 7715 and 7721?

We will first find the prime factorization of 7715 and 7721. After we will calculate the factors of 7715 and 7721 and find the biggest common factor number .

Step-1: Prime Factorization of 7715

Prime factors of 7715 are 5, 1543. Prime factorization of 7715 in exponential form is:

7715 = 5¹ × 1543¹

Step-2: Prime Factorization of 7721

Prime factors of 7721 are 7, 1103. Prime factorization of 7721 in exponential form is:

7721 = 7¹ × 1103¹

Step-3: Factors of 7715

List of positive integer factors of 7715 that divides 7715 without a remainder.

1, 5, 1543

Step-4: Factors of 7721

List of positive integer factors of 7721 that divides 7715 without a remainder.

1, 7, 1103

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 7715 and 7721. The biggest common factor number is the GCF number.
So the greatest common factor 7715 and 7721 is 1.

Also check out the Least Common Multiple of 7715 and 7721