Q: Is 321,608 a Prime Number?
A: No, 321,608 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 321608 can be evenly divided by 1 2 4 7 8 14 28 56 5,743 11,486 22,972 40,201 45,944 80,402 160,804 and 321,608, with no remainder.
Since 321,608 cannot be divided by just 1 and 321,608, it is not a prime number.