Q: Is 1,040,643 a Prime Number?
A: No, 1,040,643 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 1040643 can be evenly divided by 1 3 9 43 129 387 2,689 8,067 24,201 115,627 346,881 and 1,040,643, with no remainder.
Since 1,040,643 cannot be divided by just 1 and 1,040,643, it is not a prime number.