Q: Is 11,111,111 a Prime Number?

 A: No, 11,111,111 is not a prime number.

Why is 11,111,111 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 11111111 can be evenly divided by 1 11 73 101 137 803 1,111 1,507 7,373 10,001 13,837 81,103 110,011 152,207 1,010,101 and 11,111,111, with no remainder.

Since 11,111,111 cannot be divided by just 1 and 11,111,111, it is not a prime number.


More Examples

Number 11,111,10911,111,11011,111,11211,111,113
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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