Q: Is 1,428,318 a Prime Number?
A: No, 1,428,318 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 1428318 can be evenly divided by 1 2 3 6 9 18 73 146 219 438 657 1,087 1,314 2,174 3,261 6,522 9,783 19,566 79,351 158,702 238,053 476,106 714,159 and 1,428,318, with no remainder.
Since 1,428,318 cannot be divided by just 1 and 1,428,318, it is not a prime number.