Q: Is 216,255 a Prime Number?
A: No, 216,255 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 216255 can be evenly divided by 1 3 5 13 15 39 65 195 1,109 3,327 5,545 14,417 16,635 43,251 72,085 and 216,255, with no remainder.
Since 216,255 cannot be divided by just 1 and 216,255, it is not a prime number.