Q: Is 505,009 a Prime Number?
A: No, 505,009 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 505009 can be evenly divided by 1 103 4,903 and 505,009, with no remainder.
Since 505,009 cannot be divided by just 1 and 505,009, it is not a prime number.