Q: Is 691,583 a Prime Number?
A: Yes, 691,583 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 691583 can be evenly divided by 1 and 691,583, with no remainder.
Since 691,583 can be divided by just 1 and 691,583, it is a prime number.