Q: Is 1,800,243 a Prime Number?
A: No, 1,800,243 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 1800243 can be evenly divided by 1 3 9 317 631 951 1,893 2,853 5,679 200,027 600,081 and 1,800,243, with no remainder.
Since 1,800,243 cannot be divided by just 1 and 1,800,243, it is not a prime number.