Q: Is 10,403 a Prime Number?

A: No, 10,403 is not a prime number.

Why is 10,403 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 10403 can be evenly divided by 1 101 103 and 10,403, with no remainder.

Since 10,403 cannot be divided by just 1 and 10,403, it is not a prime number.

Number	10,401	10,402	10,404	10,405
Prime?	no	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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