Q: Is 18,309 a Prime Number?
A: No, 18,309 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 18309 can be evenly divided by 1 3 17 51 359 1,077 6,103 and 18,309, with no remainder.
Since 18,309 cannot be divided by just 1 and 18,309, it is not a prime number.