Q: Is 856 a Prime Number?
A: No, 856 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 856 can be evenly divided by 1 2 4 8 107 214 428 and 856, with no remainder.
Since 856 cannot be divided by just 1 and 856, it is not a prime number.