Q: Is 511,856 a Prime Number?
A: No, 511,856 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 511856 can be evenly divided by 1 2 4 8 16 31,991 63,982 127,964 255,928 and 511,856, with no remainder.
Since 511,856 cannot be divided by just 1 and 511,856, it is not a prime number.