There's a calculator that should help you with this problem, just go to your G O O G L E and type in Prime Factorization Calculator. There should be a box with 100 in it, just click it and type in 24. It should give you the answer or if not:
Factors of 24: 2, 2, 2, 3.
24 = 2 × 2 × 2 × 3
= 2³ × 3