Q: Is 21,120,012 a Prime Number?

 A: No, 21,120,012 is not a prime number.

Why is 21,120,012 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 21120012 can be evenly divided by 1 2 3 4 6 9 12 18 36 586,667 1,173,334 1,760,001 2,346,668 3,520,002 5,280,003 7,040,004 10,560,006 and 21,120,012, with no remainder.

Since 21,120,012 cannot be divided by just 1 and 21,120,012, 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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