Q: Is 318,321 a Prime Number?
A: No, 318,321 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 318321 can be evenly divided by 1 3 9 113 313 339 939 1,017 2,817 35,369 106,107 and 318,321, with no remainder.
Since 318,321 cannot be divided by just 1 and 318,321, it is not a prime number.