What is 64 as the product of prime factors?

Answer 1

To break a number down into prime factors, it is best to divide it by the obvious divisors first. In this case, 64 is even so can be divided by 2. If this is done, you get 32, which is also even. Divide by 2 again produces 16, which is known from times tables to be 4x4, and each of these 4s can be broken down into 2x2. Thus, the prime factors of 64 are 2, 2, 2, 2, 2 and 2. As a product of its prime factors, 64 is 2x2x2x2x2x2