Q: Is 18,615 a Prime Number?
A: No, 18,615 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 18615 can be evenly divided by 1 3 5 15 17 51 73 85 219 255 365 1,095 1,241 3,723 6,205 and 18,615, with no remainder.
Since 18,615 cannot be divided by just 1 and 18,615, it is not a prime number.