Q: Is 428,238 a Prime Number?
A: No, 428,238 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 428238 can be evenly divided by 1 2 3 6 9 18 37 74 111 222 333 643 666 1,286 1,929 3,858 5,787 11,574 23,791 47,582 71,373 142,746 214,119 and 428,238, with no remainder.
Since 428,238 cannot be divided by just 1 and 428,238, it is not a prime number.