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the prime factors of 36 re 2, 2, 3 and 3.
3
11,5.
7,3,3
The prime factorization of 87 is 1,3,29, and 87
67 is already prime; no factorization required.
56 = 23*7
21 34 56
Just 5.
It is: 3*3*5 = 45
5*5*2*2
32 x 31 = 279
It is: 3*7*7 = 147