What is the greatest common factor of 60x4y7?

To find the greatest common factor of 60x^4y^7, we need to break down each term into its prime factors.

60 can be broken down into 2 * 2 * 3 * 5 x^4 can be broken down into 2 * 2 * 3 * 5 y^7 can be broken down into 7

The greatest common factor of 60x^4y^7 is the product of the common prime factors, which in this case is 2 * 2 * 3 * 5 = 60.

Therefore, the greatest common factor of 60x^4y^7 is 60.