Q: Is 855 a Prime Number?
A: No, 855 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 855 can be evenly divided by 1 3 5 9 15 19 45 57 95 171 285 and 855, with no remainder.
Since 855 cannot be divided by just 1 and 855, it is not a prime number.