2 x 13 = 26
the prime factorization of 26 is 2 and 13... Correction: 1, 2, 13, 26 Don't ever forget one and the number itself, because if it's your homework you're gonna get it wrong >_<
11,5.
3
Prime factorization is the expression of a given number as the product of its prime factors. 2 x 2 x 3 = 12
67 is already prime; no factorization required.
The prime factorization of 87 is 1,3,29, and 87
Just 5.
21 34 56
The prime factorization of 72 is 72 9 x 8
5*5*2*2
32 x 31 = 279
5*5*2*2