What is the Greatest Common Factor of 2961 and 2978?

Greatest common factor (GCF) of 2961 and 2978 is 1.

GCF(2961,2978) = 1

We will now calculate the prime factors of 2961 and 2978, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 2961 and 2978.

How to find the GCF of 2961 and 2978?

We will first find the prime factorization of 2961 and 2978. After we will calculate the factors of 2961 and 2978 and find the biggest common factor number .

Step-1: Prime Factorization of 2961

Prime factors of 2961 are 3, 7, 47. Prime factorization of 2961 in exponential form is:

2961 = 3² × 7¹ × 47¹

Step-2: Prime Factorization of 2978

Prime factors of 2978 are 2, 1489. Prime factorization of 2978 in exponential form is:

2978 = 2¹ × 1489¹

Step-3: Factors of 2961

List of positive integer factors of 2961 that divides 2961 without a remainder.

1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987

Step-4: Factors of 2978

List of positive integer factors of 2978 that divides 2961 without a remainder.

1, 2, 1489

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 2961 and 2978. The biggest common factor number is the GCF number.
So the greatest common factor 2961 and 2978 is 1.

Also check out the Least Common Multiple of 2961 and 2978