Q: Is 111,999 a Prime Number?

A: No, 111,999 is not a prime number.

Why is 111,999 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 111999 can be evenly divided by 1 3 37 111 1,009 3,027 37,333 and 111,999, with no remainder.

Since 111,999 cannot be divided by just 1 and 111,999, it is not a prime number.

Number	111,997	111,998	112,000	112,001
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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