Q: Is 400,317 a Prime Number?
A: No, 400,317 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 400317 can be evenly divided by 1 3 133,439 and 400,317, with no remainder.
Since 400,317 cannot be divided by just 1 and 400,317, it is not a prime number.