Q: Is 20,911 a Prime Number?
A: No, 20,911 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 20911 can be evenly divided by 1 11 1,901 and 20,911, with no remainder.
Since 20,911 cannot be divided by just 1 and 20,911, it is not a prime number.