Q: Is 7,215 a Prime Number?
A: No, 7,215 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 7215 can be evenly divided by 1 3 5 13 15 37 39 65 111 185 195 481 555 1,443 2,405 and 7,215, with no remainder.
Since 7,215 cannot be divided by just 1 and 7,215, it is not a prime number.