Q: Is 243,216 a Prime Number?
A: No, 243,216 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 243216 can be evenly divided by 1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 108 144 216 432 563 1,126 1,689 2,252 3,378 4,504 5,067 6,756 9,008 10,134 13,512 15,201 20,268 27,024 30,402 40,536 60,804 81,072 121,608 and 243,216, with no remainder.
Since 243,216 cannot be divided by just 1 and 243,216, it is not a prime number.