Q: Is 279,808 a Prime Number?
A: No, 279,808 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 279808 can be evenly divided by 1 2 4 8 16 32 64 128 256 1,093 2,186 4,372 8,744 17,488 34,976 69,952 139,904 and 279,808, with no remainder.
Since 279,808 cannot be divided by just 1 and 279,808, it is not a prime number.