19 is already prime; no factorization.
2 and 29
152 = 23 × 19
2 x 5 = 10
3 * 5 * 7 * 11 = 1,155
64 =26
205
2 x 3 x 7 = 42
2 x 2 x 11 = 44
105=3x5x7
105 = 3 × 5 × 7
Prime factorization is expressing a number as the product of its prime factors. 2 x 3 x 5 x 7 = 210