Q: Is 213,309 a Prime Number?
A: No, 213,309 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 213309 can be evenly divided by 1 3 9 137 173 411 519 1,233 1,557 23,701 71,103 and 213,309, with no remainder.
Since 213,309 cannot be divided by just 1 and 213,309, it is not a prime number.