Q: Is 21,278,021 a Prime Number?

 A: Yes, 21,278,021 is a prime number.

Why is 21,278,021 a prime number?

A prime number is a natural number, greater than one, that can only be divided by 1 and itself.

The number 21278021 can be evenly divided by 1 and 21,278,021, with no remainder.

Since 21,278,021 can be divided by just 1 and 21,278,021, it is a prime number.


More Examples

Number 21,278,01921,278,02021,278,02221,278,023
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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