What is the gcf of 30 and 54?

The greatest common factor (GCF) of 30 and 54 is 6. This is the largest number that divides both 30 and 54 without leaving a remainder. To find the GCF, you can list the factors of both numbers and find the largest one they have in common. In this case, the factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30, while the factors of 54 are 1, 2, 3, 6, 9, 18, 27, and 54. The largest number that appears in both lists is 6, so the GCF of 30 and 54 is 6.