Q: Is 991,021 a Prime Number?

 A: No, 991,021 is not a prime number.

Why is 991,021 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 991021 can be evenly divided by 1 19 43 817 1,213 23,047 52,159 and 991,021, with no remainder.

Since 991,021 cannot be divided by just 1 and 991,021, it is not a prime number.


More Examples

Number 991,019991,020991,022991,023
Prime? nononono
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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