67 is already prime; no factorization required.
It is: 3*7*7 = 147
The prime factorization of 27 is: 3 x 3 x 3
the prime factors of 36 re 2, 2, 3 and 3.
5 x 3 x 2 = 30
3 x 3 x 5 = 45
3
11,5.
The prime factorization of 87 is 1,3,29, and 87
67 is already prime; no factorization required.
21 34 56
Just 5.
The prime factorization of 72 is 72 9 x 8
5*5*2*2
32 x 31 = 279
5*5*2*2
It is: 3*7*7 = 147