Q: Is 243,508 a Prime Number?
A: No, 243,508 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 243508 can be evenly divided by 1 2 4 17 34 68 3,581 7,162 14,324 60,877 121,754 and 243,508, with no remainder.
Since 243,508 cannot be divided by just 1 and 243,508, it is not a prime number.