Q: Is 100,215 a Prime Number?
A: No, 100,215 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 100215 can be evenly divided by 1 3 5 9 15 17 45 51 85 131 153 255 393 655 765 1,179 1,965 2,227 5,895 6,681 11,135 20,043 33,405 and 100,215, with no remainder.
Since 100,215 cannot be divided by just 1 and 100,215, it is not a prime number.