Q: Is 317,991 a Prime Number?
A: No, 317,991 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 317991 can be evenly divided by 1 3 105,997 and 317,991, with no remainder.
Since 317,991 cannot be divided by just 1 and 317,991, it is not a prime number.