What is the Greatest Common Factor of 6978 and 6987?

Greatest common factor (GCF) of 6978 and 6987 is 3.

GCF(6978,6987) = 3

We will now calculate the prime factors of 6978 and 6987, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 6978 and 6987.

How to find the GCF of 6978 and 6987?

We will first find the prime factorization of 6978 and 6987. After we will calculate the factors of 6978 and 6987 and find the biggest common factor number .

Step-1: Prime Factorization of 6978

Prime factors of 6978 are 2, 3, 1163. Prime factorization of 6978 in exponential form is:

6978 = 2¹ × 3¹ × 1163¹

Step-2: Prime Factorization of 6987

Prime factors of 6987 are 3, 17, 137. Prime factorization of 6987 in exponential form is:

6987 = 3¹ × 17¹ × 137¹

Step-3: Factors of 6978

List of positive integer factors of 6978 that divides 6978 without a remainder.

1, 2, 3, 6, 1163, 2326, 3489

Step-4: Factors of 6987

List of positive integer factors of 6987 that divides 6978 without a remainder.

1, 3, 17, 51, 137, 411, 2329

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 6978 and 6987. The biggest common factor number is the GCF number.
So the greatest common factor 6978 and 6987 is 3.

Also check out the Least Common Multiple of 6978 and 6987