Q: Is 428,588 a Prime Number?
A: No, 428,588 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 428588 can be evenly divided by 1 2 4 109 218 436 983 1,966 3,932 107,147 214,294 and 428,588, with no remainder.
Since 428,588 cannot be divided by just 1 and 428,588, it is not a prime number.