Q: Is 428,239 a Prime Number?
A: No, 428,239 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 428239 can be evenly divided by 1 7 131 467 917 3,269 61,177 and 428,239, with no remainder.
Since 428,239 cannot be divided by just 1 and 428,239, it is not a prime number.