Q: Is 138,125 a Prime Number?
A: No, 138,125 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 138125 can be evenly divided by 1 5 13 17 25 65 85 125 221 325 425 625 1,105 1,625 2,125 5,525 8,125 10,625 27,625 and 138,125, with no remainder.
Since 138,125 cannot be divided by just 1 and 138,125, it is not a prime number.