Q: Is 100,503 a Prime Number?

A: No, 100,503 is not a prime number.

Why is 100,503 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 100503 can be evenly divided by 1 3 9 13 39 117 859 2,577 7,731 11,167 33,501 and 100,503, with no remainder.

Since 100,503 cannot be divided by just 1 and 100,503, it is not a prime number.

Number	100,501	100,502	100,504	100,505
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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