Q: Is 1,022,643 a Prime Number?
A: No, 1,022,643 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 1022643 can be evenly divided by 1 3 9 37 83 111 249 333 747 1,369 3,071 4,107 9,213 12,321 27,639 113,627 340,881 and 1,022,643, with no remainder.
Since 1,022,643 cannot be divided by just 1 and 1,022,643, it is not a prime number.