What is the Greatest Common Factor of 2979 and 2991?

Greatest common factor (GCF) of 2979 and 2991 is 3.

GCF(2979,2991) = 3

We will now calculate the prime factors of 2979 and 2991, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 2979 and 2991.

How to find the GCF of 2979 and 2991?

We will first find the prime factorization of 2979 and 2991. After we will calculate the factors of 2979 and 2991 and find the biggest common factor number .

Step-1: Prime Factorization of 2979

Prime factors of 2979 are 3, 331. Prime factorization of 2979 in exponential form is:

2979 = 3² × 331¹

Step-2: Prime Factorization of 2991

Prime factors of 2991 are 3, 997. Prime factorization of 2991 in exponential form is:

2991 = 3¹ × 997¹

Step-3: Factors of 2979

List of positive integer factors of 2979 that divides 2979 without a remainder.

1, 3, 9, 331, 993

Step-4: Factors of 2991

List of positive integer factors of 2991 that divides 2979 without a remainder.

1, 3, 997

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 2979 and 2991. The biggest common factor number is the GCF number.
So the greatest common factor 2979 and 2991 is 3.

Also check out the Least Common Multiple of 2979 and 2991