Q: Is 639,001 a Prime Number?

A: No, 639,001 is not a prime number.

Why is 639,001 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 639001 can be evenly divided by 1 11 121 5,281 58,091 and 639,001, with no remainder.

Since 639,001 cannot be divided by just 1 and 639,001, it is not a prime number.

Number	638,999	639,000	639,002	639,003
Prime?	yes	no	no	no

All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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