Q: Is 143,391 a Prime Number?
A: No, 143,391 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 143391 can be evenly divided by 1 3 47,797 and 143,391, with no remainder.
Since 143,391 cannot be divided by just 1 and 143,391, it is not a prime number.