A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 8044344 can be evenly divided by 1 2 3 4 6 7 8 9 11 12 14 18 21 22 24 28 33 36 42 44 56 63 66 72 77 84 88 99 126 132 154 168 198 231 252 264 308 396 462 504 616 693 792 924 1,386 1,451 1,848 2,772 2,902 4,353 5,544 5,804 8,706 10,157 11,608 13,059 15,961 17,412 20,314 26,118 30,471 31,922 34,824 40,628 47,883 52,236 60,942 63,844 81,256 91,413 95,766 104,472 111,727 121,884 127,688 143,649 182,826 191,532 223,454 243,768 287,298 335,181 365,652 383,064 446,908 574,596 670,362 731,304 893,816 1,005,543 1,149,192 1,340,724 2,011,086 2,681,448 4,022,172 and 8,044,344, with no remainder.
Since 8,044,344 cannot be divided by just 1 and 8,044,344, it is not a prime number.