Q: Is 21,067,137 a Prime Number?

 A: No, 21,067,137 is not a prime number.

Why is 21,067,137 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 21067137 can be evenly divided by 1 3 7 9 13 21 29 39 63 87 91 117 203 261 273 377 609 819 887 1,131 1,827 2,639 2,661 3,393 6,209 7,917 7,983 11,531 18,627 23,751 25,723 34,593 55,881 77,169 80,717 103,779 180,061 231,507 242,151 334,399 540,183 726,453 1,003,197 1,620,549 2,340,793 3,009,591 7,022,379 and 21,067,137, with no remainder.

Since 21,067,137 cannot be divided by just 1 and 21,067,137, 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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