Question

What is 80 as the product of its prime factors?

Answer 1

keep dividing by the prime numbers is ascending order 2, 3 5 ....... ( if they are factors) , of course) until you end up with a prime number:-

80 / 2 = 40

40 / 2 = 20

20 / 2 = 10

10 / 2 = 5

So 80 = 2*2*2*2*5