Q: Is 421,155,221 a Prime Number?

 A: Yes, 421,155,221 is a prime number.

Why is 421,155,221 a prime number?

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

The number 421155221 can be evenly divided by 1 and 421,155,221, with no remainder.

Since 421,155,221 can be divided by just 1 and 421,155,221, it is a prime number.


More Examples

Number 421,155,219421,155,220421,155,222421,155,223
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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