Q: Is 726,431 a Prime Number?
A: Yes, 726,431 is a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 726431 can be evenly divided by 1 and 726,431, with no remainder.
Since 726,431 can be divided by just 1 and 726,431, it is a prime number.