Q: Is 421,503 a Prime Number?

 A: No, 421,503 is not a prime number.

Why is 421,503 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 421503 can be evenly divided by 1 3 109 327 1,289 3,867 140,501 and 421,503, with no remainder.

Since 421,503 cannot be divided by just 1 and 421,503, it is not a prime number.


More Examples

Number 421,501421,502421,504421,505
Prime? yesnonono
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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