Q: Is 999 a Prime Number?
A: No, 999 is 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 999 can be evenly divided by 1 3 9 27 37 111 333 and 999, with no remainder.
Since 999 cannot be divided by just 1 and 999, it is not a prime number.