Q: Is 256 a Prime Number?
A: No, 256 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 256 can be evenly divided by 1 2 4 8 16 32 64 128 and 256, with no remainder.
Since 256 cannot be divided by just 1 and 256, it is not a prime number.