Q: Is 10,991 a Prime Number?
A: No, 10,991 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 10991 can be evenly divided by 1 29 379 and 10,991, with no remainder.
Since 10,991 cannot be divided by just 1 and 10,991, it is not a prime number.