Q: Is 321,808 a Prime Number?
A: No, 321,808 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 321808 can be evenly divided by 1 2 4 8 16 20,113 40,226 80,452 160,904 and 321,808, with no remainder.
Since 321,808 cannot be divided by just 1 and 321,808, it is not a prime number.