How do i find the power of a product?

If you mean something like 4^3 * 4^14 you have to obey two rules.

1. The base number must be the same for both numbers making up the product.

2. The powers must be added.

In this case 1 and 2 both can be obeyed.

4^3 * 4^14 = 4^ (3 + 14) = 4^17