Q: Is 216,909 a Prime Number?
A: No, 216,909 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 216909 can be evenly divided by 1 3 7 9 11 21 33 63 77 99 231 313 693 939 2,191 2,817 3,443 6,573 10,329 19,719 24,101 30,987 72,303 and 216,909, with no remainder.
Since 216,909 cannot be divided by just 1 and 216,909, it is not a prime number.