Q: Is 1,218,736 a Prime Number?
A: No, 1,218,736 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 1218736 can be evenly divided by 1 2 4 8 16 19 38 76 152 211 304 361 422 722 844 1,444 1,688 2,888 3,376 4,009 5,776 8,018 16,036 32,072 64,144 76,171 152,342 304,684 609,368 and 1,218,736, with no remainder.
Since 1,218,736 cannot be divided by just 1 and 1,218,736, it is not a prime number.