Q: Is 505,804 a Prime Number?
A: No, 505,804 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 505804 can be evenly divided by 1 2 4 13 26 52 71 137 142 274 284 548 923 1,781 1,846 3,562 3,692 7,124 9,727 19,454 38,908 126,451 252,902 and 505,804, with no remainder.
Since 505,804 cannot be divided by just 1 and 505,804, it is not a prime number.