Q: Is 231,231,021 a Prime Number?

 A: No, 231,231,021 is not a prime number.

Why is 231,231,021 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 231231021 can be evenly divided by 1 3 7 21 41 123 271 287 813 861 991 1,897 2,973 5,691 6,937 11,111 20,811 33,333 40,631 77,777 121,893 233,331 268,561 284,417 805,683 853,251 1,879,927 5,639,781 11,011,001 33,033,003 77,077,007 and 231,231,021, with no remainder.

Since 231,231,021 cannot be divided by just 1 and 231,231,021, it is not a prime number.


More Examples

Number 231,231,019231,231,020231,231,022231,231,023
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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