What is the Greatest Common Factor of 15721 and 15732?

Greatest common factor (GCF) of 15721 and 15732 is 1.

GCF(15721,15732) = 1

We will now calculate the prime factors of 15721 and 15732, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15721 and 15732.

How to find the GCF of 15721 and 15732?

We will first find the prime factorization of 15721 and 15732. After we will calculate the factors of 15721 and 15732 and find the biggest common factor number .

Step-1: Prime Factorization of 15721

Prime factors of 15721 are 79, 199. Prime factorization of 15721 in exponential form is:

15721 = 79¹ × 199¹

Step-2: Prime Factorization of 15732

Prime factors of 15732 are 2, 3, 19, 23. Prime factorization of 15732 in exponential form is:

15732 = 2² × 3² × 19¹ × 23¹

Step-3: Factors of 15721

List of positive integer factors of 15721 that divides 15721 without a remainder.

1, 79, 199

Step-4: Factors of 15732

List of positive integer factors of 15732 that divides 15721 without a remainder.

1, 2, 3, 4, 6, 9, 12, 18, 19, 23, 36, 38, 46, 57, 69, 76, 92, 114, 138, 171, 207, 228, 276, 342, 414, 437, 684, 828, 874, 1311, 1748, 2622, 3933, 5244, 7866

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15721 and 15732. The biggest common factor number is the GCF number.
So the greatest common factor 15721 and 15732 is 1.

Also check out the Least Common Multiple of 15721 and 15732