Q: Is 278,317 a Prime Number?
A: No, 278,317 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 278317 can be evenly divided by 1 13 79 271 1,027 3,523 21,409 and 278,317, with no remainder.
Since 278,317 cannot be divided by just 1 and 278,317, it is not a prime number.