What is the Greatest Common Factor of 15991 and 15996?

Greatest common factor (GCF) of 15991 and 15996 is 1.

GCF(15991,15996) = 1

We will now calculate the prime factors of 15991 and 15996, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15991 and 15996.

How to find the GCF of 15991 and 15996?

We will first find the prime factorization of 15991 and 15996. After we will calculate the factors of 15991 and 15996 and find the biggest common factor number .

Step-1: Prime Factorization of 15991

Prime factors of 15991 are 15991. Prime factorization of 15991 in exponential form is:

15991 = 15991¹

Step-2: Prime Factorization of 15996

Prime factors of 15996 are 2, 3, 31, 43. Prime factorization of 15996 in exponential form is:

15996 = 2² × 3¹ × 31¹ × 43¹

Step-3: Factors of 15991

List of positive integer factors of 15991 that divides 15991 without a remainder.

Step-4: Factors of 15996

List of positive integer factors of 15996 that divides 15991 without a remainder.

1, 2, 3, 4, 6, 12, 31, 43, 62, 86, 93, 124, 129, 172, 186, 258, 372, 516, 1333, 2666, 3999, 5332, 7998

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15991 and 15996. The biggest common factor number is the GCF number.
So the greatest common factor 15991 and 15996 is 1.

Also check out the Least Common Multiple of 15991 and 15996