Q: Is 1,842,543 a Prime Number?
A: No, 1,842,543 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 1842543 can be evenly divided by 1 3 9 101 303 909 2,027 6,081 18,243 204,727 614,181 and 1,842,543, with no remainder.
Since 1,842,543 cannot be divided by just 1 and 1,842,543, it is not a prime number.