Q: Is 21,706,137 a Prime Number?

 A: No, 21,706,137 is not a prime number.

Why is 21,706,137 not a prime number?

A prime number is a natural number, greater than one, that can only be divided by 1 and itself.

The number 21706137 can be evenly divided by 1 3 9 27 81 173 519 1,549 1,557 4,647 4,671 13,941 14,013 41,823 125,469 267,977 803,931 2,411,793 7,235,379 and 21,706,137, with no remainder.

Since 21,706,137 cannot be divided by just 1 and 21,706,137, it is not a prime number.


More Examples

  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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