Q: Is 513,805 a Prime Number?
A: No, 513,805 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 513805 can be evenly divided by 1 5 102,761 and 513,805, with no remainder.
Since 513,805 cannot be divided by just 1 and 513,805, it is not a prime number.