Q: Is 509,609 a Prime Number?
A: No, 509,609 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 509609 can be evenly divided by 1 17 31 527 967 16,439 29,977 and 509,609, with no remainder.
Since 509,609 cannot be divided by just 1 and 509,609, it is not a prime number.