The answer is 3 x 37
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57 = 3 x 19 111 = 3 x 37 Thus they are not prime numbers
Each of these numbers goes evenly into 333: 1, 3, 9, 37, 111, 333.
The prime factorization of 16 is: 2 x 8 2 x 2 x 4 2 x 2 x 2 x 2. There is not a pair of prime numbers that make 16.
2 and 17
3 and 19