Q: Is 423,243 a Prime Number?
A: No, 423,243 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 423243 can be evenly divided by 1 3 9 31 37 41 93 111 123 279 333 369 1,147 1,271 1,517 3,441 3,813 4,551 10,323 11,439 13,653 47,027 141,081 and 423,243, with no remainder.
Since 423,243 cannot be divided by just 1 and 423,243, it is not a prime number.