Q: Is 138,691 a Prime Number?
A: No, 138,691 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 138691 can be evenly divided by 1 7 19,813 and 138,691, with no remainder.
Since 138,691 cannot be divided by just 1 and 138,691, it is not a prime number.