Q: Is 1,243,218 a Prime Number?
A: No, 1,243,218 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 1243218 can be evenly divided by 1 2 3 6 383 541 766 1,082 1,149 1,623 2,298 3,246 207,203 414,406 621,609 and 1,243,218, with no remainder.
Since 1,243,218 cannot be divided by just 1 and 1,243,218, it is not a prime number.