Q: Is 509,873 a Prime Number?
A: No, 509,873 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 509873 can be evenly divided by 1 7 13 91 169 431 1,183 3,017 5,603 39,221 72,839 and 509,873, with no remainder.
Since 509,873 cannot be divided by just 1 and 509,873, it is not a prime number.