Q: Is 40,255 a Prime Number?

A: No, 40,255 is not a prime number.

Why is 40,255 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 40255 can be evenly divided by 1 5 83 97 415 485 8,051 and 40,255, with no remainder.

Since 40,255 cannot be divided by just 1 and 40,255, it is not a prime number.

Number	40,253	40,254	40,256	40,257
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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