Q: Is 805,643 a Prime Number?
A: No, 805,643 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 805643 can be evenly divided by 1 149 5,407 and 805,643, with no remainder.
Since 805,643 cannot be divided by just 1 and 805,643, it is not a prime number.