Q: Is 720,851 a Prime Number?
A: No, 720,851 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 720851 can be evenly divided by 1 17 42,403 and 720,851, with no remainder.
Since 720,851 cannot be divided by just 1 and 720,851, it is not a prime number.