What is the Greatest Common Factor of 6981 and 6990?

Greatest common factor (GCF) of 6981 and 6990 is 3.

GCF(6981,6990) = 3

We will now calculate the prime factors of 6981 and 6990, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 6981 and 6990.

How to find the GCF of 6981 and 6990?

We will first find the prime factorization of 6981 and 6990. After we will calculate the factors of 6981 and 6990 and find the biggest common factor number .

Step-1: Prime Factorization of 6981

Prime factors of 6981 are 3, 13, 179. Prime factorization of 6981 in exponential form is:

6981 = 3¹ × 13¹ × 179¹

Step-2: Prime Factorization of 6990

Prime factors of 6990 are 2, 3, 5, 233. Prime factorization of 6990 in exponential form is:

6990 = 2¹ × 3¹ × 5¹ × 233¹

Step-3: Factors of 6981

List of positive integer factors of 6981 that divides 6981 without a remainder.

1, 3, 13, 39, 179, 537, 2327

Step-4: Factors of 6990

List of positive integer factors of 6990 that divides 6981 without a remainder.

1, 2, 3, 5, 6, 10, 15, 30, 233, 466, 699, 1165, 1398, 2330, 3495

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 6981 and 6990. The biggest common factor number is the GCF number.
So the greatest common factor 6981 and 6990 is 3.

Also check out the Least Common Multiple of 6981 and 6990