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# What is prime natural number?

Updated: 11/2/2022

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14y ago

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A Prime number is a number, bigger than 1, that is only divisible by 1, and by itself. The first prime numbers are:

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, ...

2 is a prime number; all the other prime numbers are odd - but of course, not all odd numbers are prime. For example, 15 = 3 x 5, so it is not a prime.

The set of prime numbers is infinite.

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