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There is no table that comes in it except 1 and 13 and numbers that have only 2 multiples are prime numbers.

A Prime number has no factors other than 1 and itself. 13 has no factors other than 1 and itself, so 13 is a prime number.

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15y ago

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Because it is only divisible by itself and 1.

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11y ago
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Q: Why is number 13 a prime number?
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