Q: Is 643,001 a Prime Number?

 A: No, 643,001 is not a prime number.

Why is 643,001 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 643001 can be evenly divided by 1 61 83 127 5,063 7,747 10,541 and 643,001, with no remainder.

Since 643,001 cannot be divided by just 1 and 643,001, it is not a prime number.


More Examples

Number 642,999643,000643,002643,003
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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