Q: Is 216,243 a Prime Number?
A: No, 216,243 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 216243 can be evenly divided by 1 3 9 27 8,009 24,027 72,081 and 216,243, with no remainder.
Since 216,243 cannot be divided by just 1 and 216,243, it is not a prime number.