58 = 2•29 both 2 and 29 are Primes
so, Prime Factors of 58 = 2•29
2 x 29 = 58 (no exponents needed).
11,5.
3
67 is already prime; no factorization required.
The prime factorization of 87 is 1,3,29, and 87
21 34 56
Just 5.
The prime factorization of 72 is 72 9 x 8
5*5*2*2
32 x 31 = 279
It is: 3*7*7 = 147
It is: 3*3*5 = 45