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20 October, 04:40

Why is 1 not prime? explain why

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  1. 20 October, 05:32
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    A prime number is a number with 2 factors. Since 1 has only 1 factor, it is not prime, because it doesn't have 2 factors.
  2. 20 October, 05:35
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    A prime number is a number that has two factors that are itself and 1.

    E. g 2 is a prime number because the two factors are 2 and 1.

    E. g 3 is a prime number because the two factors are 3 and 1.

    1 is taken as a natural benchmark for defining prime numbers. It is excluded from being a prime number.
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