Q: Is 243,559 a Prime Number?
A: No, 243,559 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 243559 can be evenly divided by 1 17 14,327 and 243,559, with no remainder.
Since 243,559 cannot be divided by just 1 and 243,559, it is not a prime number.