Q: Is 428,389 a Prime Number?
A: No, 428,389 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 428389 can be evenly divided by 1 13 31 403 1,063 13,819 32,953 and 428,389, with no remainder.
Since 428,389 cannot be divided by just 1 and 428,389, it is not a prime number.