Q: Is 131,991 a Prime Number?
A: No, 131,991 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 131991 can be evenly divided by 1 3 43,997 and 131,991, with no remainder.
Since 131,991 cannot be divided by just 1 and 131,991, it is not a prime number.