Q: Is 428,161 a Prime Number?
A: Yes, 428,161 is a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 428161 can be evenly divided by 1 and 428,161, with no remainder.
Since 428,161 can be divided by just 1 and 428,161, it is a prime number.