Q: Is 21,843 a Prime Number?
A: No, 21,843 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 21843 can be evenly divided by 1 3 9 27 809 2,427 7,281 and 21,843, with no remainder.
Since 21,843 cannot be divided by just 1 and 21,843, it is not a prime number.