GCF of 247 and 990

What is the GCF of 247 and 990? - The GCF of 247 and 990 is 1. Follow the step by step instructions on how to find the great common factor of 247 and 990.

What is the greatest common factor of 247 and 990?

How to find the gcf of 247 and 990?

To find the gcf of 247 and 990, we first need to find the factors of 247 and 990 and then choose the greatest common factor that are dividable by both 247 and 990.

Factors of 247 = 1, 13, 19, 247
Factors of 990 = 1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990

The greatest common factor of 247 and 990 is 1, because 1 is the largest number that is divisible by both numbers.

Another method to find the greatest common factor of 247 and 990 is by using the prime factorization method.
To use prime factorization, we first need to find the prime factors of 247 and 990, and then get the GCF by multiplying all the common prime factors from the two sets.

Prime factorization of 247 = 13 x 19
Prime factorization of 990 = 2 x 3 x 3 x 5 x 11
Common prime factors = = 1