Q: Is 421,787 a Prime Number?

 A: No, 421,787 is not a prime number.

Why is 421,787 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 421787 can be evenly divided by 1 17 43 577 731 9,809 24,811 and 421,787, with no remainder.

Since 421,787 cannot be divided by just 1 and 421,787, it is not a prime number.


More Examples

Number 421,785421,786421,788421,789
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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