17 is the only prime in this list.
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The factors of 28 are: 1, 2, 4, 7, 14, 28 2 and 7 are prime. The factors of 32 are: 1, 2, 4, 8, 16, 32 2 is prime.
The factors of 28 are: 1, 2, 4, 7, 14, and 28.The prime factors of 28 are: 2 and 7.The factors of 32 are: 1, 2, 4, 8, 16, and 32.The only prime factor of 32 is: 2.
-32 = -25The only prime factor of -32 is 2. Negative numbers can't have prime factorizations.
32 has only one prime factor and it is 2
14 / \ 2 7 = 2 x 7.