Q: Is 991,023 a Prime Number?
A: No, 991,023 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 991023 can be evenly divided by 1 3 11 33 59 177 509 649 1,527 1,947 5,599 16,797 30,031 90,093 330,341 and 991,023, with no remainder.
Since 991,023 cannot be divided by just 1 and 991,023, it is not a prime number.