Q: Is 805,780 a Prime Number?
A: No, 805,780 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 805780 can be evenly divided by 1 2 4 5 10 20 40,289 80,578 161,156 201,445 402,890 and 805,780, with no remainder.
Since 805,780 cannot be divided by just 1 and 805,780, it is not a prime number.