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No, they are composite numbers.

The factors of 15 are 1, 3, 5, and 15.

The factors of 33 are 1, 3, 11, and 33.

Prime numbers have two factors: 1 and the number itself, so 15 and 33 cannot be prime.

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10y ago
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Q: Are 15 and 33 prime numbers?
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