Q: Is 816 a Prime Number?
A: No, 816 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 816 can be evenly divided by 1 2 3 4 6 8 12 16 17 24 34 48 51 68 102 136 204 272 408 and 816, with no remainder.
Since 816 cannot be divided by just 1 and 816, it is not a prime number.