Q: Is 6,688,321 a Prime Number?
A: No, 6,688,321 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 6688321 can be evenly divided by 1 101 66,221 and 6,688,321, with no remainder.
Since 6,688,321 cannot be divided by just 1 and 6,688,321, it is not a prime number.