Q: Is 210,021 a Prime Number?

A: No, 210,021 is not a prime number.

Why is 210,021 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 210021 can be evenly divided by 1 3 7 21 73 137 219 411 511 959 1,533 2,877 10,001 30,003 70,007 and 210,021, with no remainder.

Since 210,021 cannot be divided by just 1 and 210,021, it is not a prime number.

Number	210,019	210,020	210,022	210,023
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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