Q: Is 428,215 a Prime Number?
A: No, 428,215 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 428215 can be evenly divided by 1 5 85,643 and 428,215, with no remainder.
Since 428,215 cannot be divided by just 1 and 428,215, it is not a prime number.