Fundamental Theorem of Arithmetic

The Fundamental Theorem of Arithmetic states that all natural numbers greater than 1 can be written as the unique product of prime numbers. That's EVERY number. A proof can be written to show this, we'll leave it to Euclid and Gauss for now.

Let's pick a number and show it for that particular example. A composite would work since we wouldn't have much work to do. So we choose :

120 = 2 * 2 * 2 * 3 * 5