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31 is a Prime number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.

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12y ago
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9y ago

31 is a prime number with only two factors which are itself and one

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7y ago

prime

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9y ago

Prime

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Q: Is 31a composite or prime number?
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