Q: Is 129,243 a Prime Number?
A: No, 129,243 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 129243 can be evenly divided by 1 3 67 201 643 1,929 43,081 and 129,243, with no remainder.
Since 129,243 cannot be divided by just 1 and 129,243, it is not a prime number.