Q: Is 12,309 a Prime Number?
A: No, 12,309 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 12309 can be evenly divided by 1 3 11 33 373 1,119 4,103 and 12,309, with no remainder.
Since 12,309 cannot be divided by just 1 and 12,309, it is not a prime number.