Q: Is 2,160,321 a Prime Number?
A: No, 2,160,321 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 2160321 can be evenly divided by 1 3 23 69 131 239 393 717 3,013 5,497 9,039 16,491 31,309 93,927 720,107 and 2,160,321, with no remainder.
Since 2,160,321 cannot be divided by just 1 and 2,160,321, it is not a prime number.