Q: Is 997,643 a Prime Number?
A: No, 997,643 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 997643 can be evenly divided by 1 43 23,201 and 997,643, with no remainder.
Since 997,643 cannot be divided by just 1 and 997,643, it is not a prime number.