Q: Is 21,998 a Prime Number?
A: No, 21,998 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 21998 can be evenly divided by 1 2 17 34 647 1,294 10,999 and 21,998, with no remainder.
Since 21,998 cannot be divided by just 1 and 21,998, it is not a prime number.