What is gcf of 54 and 72

18 is the gcf of 54 and 72

18 is the greatest common factor of 72 and 54.

Step-by-step explanation:

We can solve this by finding the prime factorization of 54 and 72.

54: 2 x 3 x 3 x 3

72: 2 x 2 x 2 x 3 x 3

Finding the common number we can see that both numbers have the factorization of 2 x 3 x 3, which would be the greatest common factor. Multiplying 2 x 3 x 3 together we have:

2 x 3 x 3 = 18.

Therefore 18 is the greatest common factor of 72 and 54