Q: Is 243,389 a Prime Number?
A: No, 243,389 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 243389 can be evenly divided by 1 17 103 139 1,751 2,363 14,317 and 243,389, with no remainder.
Since 243,389 cannot be divided by just 1 and 243,389, it is not a prime number.