What is the Greatest Common Factor of 15971 and 15981?

Greatest common factor (GCF) of 15971 and 15981 is 1.

GCF(15971,15981) = 1

We will now calculate the prime factors of 15971 and 15981, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15971 and 15981.

How to find the GCF of 15971 and 15981?

We will first find the prime factorization of 15971 and 15981. After we will calculate the factors of 15971 and 15981 and find the biggest common factor number .

Step-1: Prime Factorization of 15971

Prime factors of 15971 are 15971. Prime factorization of 15971 in exponential form is:

15971 = 15971¹

Step-2: Prime Factorization of 15981

Prime factors of 15981 are 3, 7, 761. Prime factorization of 15981 in exponential form is:

15981 = 3¹ × 7¹ × 761¹

Step-3: Factors of 15971

List of positive integer factors of 15971 that divides 15971 without a remainder.

Step-4: Factors of 15981

List of positive integer factors of 15981 that divides 15971 without a remainder.

1, 3, 7, 21, 761, 2283, 5327

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15971 and 15981. The biggest common factor number is the GCF number.
So the greatest common factor 15971 and 15981 is 1.

Also check out the Least Common Multiple of 15971 and 15981