Q: Is 345,309 a Prime Number?
A: No, 345,309 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 345309 can be evenly divided by 1 3 31 47 79 93 141 237 1,457 2,449 3,713 4,371 7,347 11,139 115,103 and 345,309, with no remainder.
Since 345,309 cannot be divided by just 1 and 345,309, it is not a prime number.