Q: Is 21,001,007 a Prime Number?

 A: No, 21,001,007 is not a prime number.

Why is 21,001,007 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 21001007 can be evenly divided by 1 3,833 5,479 and 21,001,007, with no remainder.

Since 21,001,007 cannot be divided by just 1 and 21,001,007, it is not a prime number.


More Examples

Number 21,001,00521,001,00621,001,00821,001,009
Prime? nononono
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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