Q: Is 1,321,215 a Prime Number?
A: No, 1,321,215 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 1321215 can be evenly divided by 1 3 5 7 15 21 35 105 12,583 37,749 62,915 88,081 188,745 264,243 440,405 and 1,321,215, with no remainder.
Since 1,321,215 cannot be divided by just 1 and 1,321,215, it is not a prime number.