Q: Is 820,508 a Prime Number?
A: No, 820,508 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 820508 can be evenly divided by 1 2 4 13 26 31 52 62 124 403 509 806 1,018 1,612 2,036 6,617 13,234 15,779 26,468 31,558 63,116 205,127 410,254 and 820,508, with no remainder.
Since 820,508 cannot be divided by just 1 and 820,508, it is not a prime number.