Are 15 and 17 prime or composite why?

Anonymous

∙ 14y ago

Updated: 8/20/2019

15 is composite, because it can be written as the product of numbers besides itself and 1 (3 * 5 = 15). 17 is prime, because the only numbers that multiply to 17 are 1 and itself.

Wiki User

∙ 14y ago

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