Q: Is 21,923 a Prime Number?
A: No, 21,923 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 21923 can be evenly divided by 1 11 1,993 and 21,923, with no remainder.
Since 21,923 cannot be divided by just 1 and 21,923, it is not a prime number.