A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 1177110 can be evenly divided by 1 2 3 5 6 9 10 11 15 18 22 29 30 33 41 45 55 58 66 82 87 90 99 110 123 145 165 174 198 205 246 261 290 319 330 369 410 435 451 495 522 615 638 738 870 902 957 990 1,189 1,230 1,305 1,353 1,595 1,845 1,914 2,255 2,378 2,610 2,706 2,871 3,190 3,567 3,690 4,059 4,510 4,785 5,742 5,945 6,765 7,134 8,118 9,570 10,701 11,890 13,079 13,530 14,355 17,835 20,295 21,402 26,158 28,710 35,670 39,237 40,590 53,505 65,395 78,474 107,010 117,711 130,790 196,185 235,422 392,370 588,555 and 1,177,110, with no remainder.
Since 1,177,110 cannot be divided by just 1 and 1,177,110, it is not a prime number.