Q: Is 1,418,355 a Prime Number?
A: No, 1,418,355 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 1418355 can be evenly divided by 1 3 5 9 15 43 45 129 215 387 645 733 1,935 2,199 3,665 6,597 10,995 31,519 32,985 94,557 157,595 283,671 472,785 and 1,418,355, with no remainder.
Since 1,418,355 cannot be divided by just 1 and 1,418,355, it is not a prime number.