Q: Is 21,938 a Prime Number?
A: No, 21,938 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 21938 can be evenly divided by 1 2 7 14 1,567 3,134 10,969 and 21,938, with no remainder.
Since 21,938 cannot be divided by just 1 and 21,938, it is not a prime number.