Q: Is 111,111,100 a Prime Number?

 A: No, 111,111,100 is not a prime number.

Why is 111,111,100 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 111111100 can be evenly divided by 1 2 4 5 10 20 25 50 100 239 478 956 1,195 2,390 4,649 4,780 5,975 9,298 11,950 18,596 23,245 23,900 46,490 92,980 116,225 232,450 464,900 1,111,111 2,222,222 4,444,444 5,555,555 11,111,110 22,222,220 27,777,775 55,555,550 and 111,111,100, with no remainder.

Since 111,111,100 cannot be divided by just 1 and 111,111,100, it is not a prime number.


More Examples

  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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