Q: Is 138,805 a Prime Number?
A: No, 138,805 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 138805 can be evenly divided by 1 5 17 23 71 85 115 355 391 1,207 1,633 1,955 6,035 8,165 27,761 and 138,805, with no remainder.
Since 138,805 cannot be divided by just 1 and 138,805, it is not a prime number.