Question 802790
It's easiest if you find numbers close to each other to begin with.
10,000 
= (100) x (100) 
= (10 x 10) x (10 x 10)
= (5 x 2) x (5 x 2) x (5 x 2) x (5 x 2)
= 5 x 5 x 5 x 5 x 2 x 2 x 2 x 2
= 5^4 x 2^4