Q: Is 243,318 a Prime Number?
A: No, 243,318 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 243318 can be evenly divided by 1 2 3 6 107 214 321 379 642 758 1,137 2,274 40,553 81,106 121,659 and 243,318, with no remainder.
Since 243,318 cannot be divided by just 1 and 243,318, it is not a prime number.