Q: Is 243,538 a Prime Number?
A: No, 243,538 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 243538 can be evenly divided by 1 2 263 463 526 926 121,769 and 243,538, with no remainder.
Since 243,538 cannot be divided by just 1 and 243,538, it is not a prime number.