Q: Is 2,100,021 a Prime Number?

 A: No, 2,100,021 is not a prime number.

Why is 2,100,021 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 2100021 can be evenly divided by 1 3 7 11 21 33 77 231 9,091 27,273 63,637 100,001 190,911 300,003 700,007 and 2,100,021, with no remainder.

Since 2,100,021 cannot be divided by just 1 and 2,100,021, it is not a prime number.


More Examples

Number 2,100,0192,100,0202,100,0222,100,023
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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