Q: Is 642 a Prime Number?

 A: No, 642 is not a prime number.

Why is 642 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 642 can be evenly divided by 1 2 3 6 107 214 321 and 642, with no remainder.

Since 642 cannot be divided by just 1 and 642, it is not a prime number.


More Examples

Number 640641643644
Prime? noyesyesno
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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