Q: Is 21,006,015 a Prime Number?

 A: No, 21,006,015 is not a prime number.

Why is 21,006,015 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 21006015 can be evenly divided by 1 3 5 15 23 69 115 345 60,887 182,661 304,435 913,305 1,400,401 4,201,203 7,002,005 and 21,006,015, with no remainder.

Since 21,006,015 cannot be divided by just 1 and 21,006,015, it is not a prime number.


More Examples

Number 21,006,01321,006,01421,006,01621,006,017
Prime? nononoyes
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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