Q: Is 509,243 a Prime Number?
A: No, 509,243 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 509243 can be evenly divided by 1 7 23 161 3,163 22,141 72,749 and 509,243, with no remainder.
Since 509,243 cannot be divided by just 1 and 509,243, it is not a prime number.