Q: Is 18,315 a Prime Number?
A: No, 18,315 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 18315 can be evenly divided by 1 3 5 9 11 15 33 37 45 55 99 111 165 185 333 407 495 555 1,221 1,665 2,035 3,663 6,105 and 18,315, with no remainder.
Since 18,315 cannot be divided by just 1 and 18,315, it is not a prime number.