Q: Is 137,991 a Prime Number?
A: No, 137,991 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 137991 can be evenly divided by 1 3 7 21 6,571 19,713 45,997 and 137,991, with no remainder.
Since 137,991 cannot be divided by just 1 and 137,991, it is not a prime number.