Q: Is 501,603 a Prime Number?

A: No, 501,603 is not a prime number.

Why is 501,603 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 501603 can be evenly divided by 1 3 61 183 2,741 8,223 167,201 and 501,603, with no remainder.

Since 501,603 cannot be divided by just 1 and 501,603, it is not a prime number.

Number	501,601	501,602	501,604	501,605
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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