Q: Is 428,388 a Prime Number?
A: No, 428,388 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 428388 can be evenly divided by 1 2 3 4 6 12 29 58 87 116 174 348 1,231 2,462 3,693 4,924 7,386 14,772 35,699 71,398 107,097 142,796 214,194 and 428,388, with no remainder.
Since 428,388 cannot be divided by just 1 and 428,388, it is not a prime number.