What is the greatest common factor of 45 and 210?

Answer 1

The Greatest common factor of 45 and 210 is 15.

The prime factorization of 45 is 3*3*5

The prime factorization of 210 is 2*3*5*7

The greatest common factor is 3*5 = 15

Answer 2

Prime factorization of 210 = 2 x 3 x 5 x 7

Prime factorization of 45 = 3 x 3 x 5

There is one 5 and one 3 in common.

GCF = 3 x 5 = 15.

Answer 3

The GCF is 15.

Answer 4

GCF of 45 and 210 is 15.

Answer 5

15