Q: Is 138,491 a Prime Number?
A: No, 138,491 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 138491 can be evenly divided by 1 19 37 197 703 3,743 7,289 and 138,491, with no remainder.
Since 138,491 cannot be divided by just 1 and 138,491, it is not a prime number.