Q: Is 1,321,816 a Prime Number?
A: No, 1,321,816 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 1321816 can be evenly divided by 1 2 4 8 127 254 508 1,016 1,301 2,602 5,204 10,408 165,227 330,454 660,908 and 1,321,816, with no remainder.
Since 1,321,816 cannot be divided by just 1 and 1,321,816, it is not a prime number.