Q: Is 428,501 a Prime Number?
A: No, 428,501 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 428501 can be evenly divided by 1 131 3,271 and 428,501, with no remainder.
Since 428,501 cannot be divided by just 1 and 428,501, it is not a prime number.