Q: Is 138,605 a Prime Number?
A: No, 138,605 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 138605 can be evenly divided by 1 5 19 95 1,459 7,295 27,721 and 138,605, with no remainder.
Since 138,605 cannot be divided by just 1 and 138,605, it is not a prime number.