Q: Is 855,915 a Prime Number?
A: No, 855,915 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 855915 can be evenly divided by 1 3 5 15 43 129 215 645 1,327 3,981 6,635 19,905 57,061 171,183 285,305 and 855,915, with no remainder.
Since 855,915 cannot be divided by just 1 and 855,915, it is not a prime number.