A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2683044 can be evenly divided by 1 2 3 4 6 7 9 12 13 14 18 21 26 27 28 36 39 42 49 52 54 63 78 81 84 91 98 108 117 126 147 156 162 169 182 189 196 234 252 273 294 324 338 351 364 378 441 468 507 546 567 588 637 676 702 756 819 882 1,014 1,053 1,092 1,134 1,183 1,274 1,323 1,404 1,521 1,638 1,764 1,911 2,028 2,106 2,268 2,366 2,457 2,548 2,646 3,042 3,276 3,549 3,822 3,969 4,212 4,563 4,732 4,914 5,292 5,733 6,084 7,098 7,371 7,644 7,938 8,281 9,126 9,828 10,647 11,466 13,689 14,196 14,742 15,876 16,562 17,199 18,252 21,294 22,932 24,843 27,378 29,484 31,941 33,124 34,398 42,588 49,686 51,597 54,756 63,882 68,796 74,529 95,823 99,372 103,194 127,764 149,058 191,646 206,388 223,587 298,116 383,292 447,174 670,761 894,348 1,341,522 and 2,683,044, with no remainder.
Since 2,683,044 cannot be divided by just 1 and 2,683,044, it is not a prime number.