Q: Is 215,397 a Prime Number?
A: No, 215,397 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 215397 can be evenly divided by 1 3 7 9 13 21 39 63 91 117 263 273 789 819 1,841 2,367 3,419 5,523 10,257 16,569 23,933 30,771 71,799 and 215,397, with no remainder.
Since 215,397 cannot be divided by just 1 and 215,397, it is not a prime number.