Q: Is 21,400,001 a Prime Number?

 A: No, 21,400,001 is not a prime number.

Why is 21,400,001 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 21400001 can be evenly divided by 1 7 67 103 443 469 721 3,101 6,901 29,681 45,629 48,307 207,767 319,403 3,057,143 and 21,400,001, with no remainder.

Since 21,400,001 cannot be divided by just 1 and 21,400,001, it is not a prime number.


More Examples

Number 21,399,99921,400,00021,400,00221,400,003
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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