Q: Is 139,401 a Prime Number?
A: No, 139,401 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 139401 can be evenly divided by 1 3 9 27 81 1,721 5,163 15,489 46,467 and 139,401, with no remainder.
Since 139,401 cannot be divided by just 1 and 139,401, it is not a prime number.