A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 1116060 can be evenly divided by 1 2 3 4 5 6 10 11 12 15 19 20 22 30 33 38 44 55 57 60 66 76 89 95 110 114 132 165 178 190 209 220 228 267 285 330 356 380 418 445 534 570 627 660 836 890 979 1,045 1,068 1,140 1,254 1,335 1,691 1,780 1,958 2,090 2,508 2,670 2,937 3,135 3,382 3,916 4,180 4,895 5,073 5,340 5,874 6,270 6,764 8,455 9,790 10,146 11,748 12,540 14,685 16,910 18,601 19,580 20,292 25,365 29,370 33,820 37,202 50,730 55,803 58,740 74,404 93,005 101,460 111,606 186,010 223,212 279,015 372,020 558,030 and 1,116,060, with no remainder.
Since 1,116,060 cannot be divided by just 1 and 1,116,060, it is not a prime number.