Q: Is 428,178 a Prime Number?
A: No, 428,178 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 428178 can be evenly divided by 1 2 3 6 71,363 142,726 214,089 and 428,178, with no remainder.
Since 428,178 cannot be divided by just 1 and 428,178, it is not a prime number.