The number 993,300 can be evenly divided by 1 2 3 4 5 6 7 10 11 12 14 15 20 21 22 25 28 30 33 35 42 43 44 50 55 60 66 70 75 77 84 86 100 105 110 129 132 140 150 154 165 172 175 210 215 220 231 258 275 300 301 308 330 350 385 420 430 462 473 516 525 550 602 645 660 700 770 825 860 903 924 946 1,050 1,075 1,100 1,155 1,204 1,290 1,419 1,505 1,540 1,650 1,806 1,892 1,925 2,100 2,150 2,310 2,365 2,580 2,838 3,010 3,225 3,300 3,311 3,612 3,850 4,300 4,515 4,620 4,730 5,676 5,775 6,020 6,450 6,622 7,095 7,525 7,700 9,030 9,460 9,933 11,550 11,825 12,900 13,244 14,190 15,050 16,555 18,060 19,866 22,575 23,100 23,650 28,380 30,100 33,110 35,475 39,732 45,150 47,300 49,665 66,220 70,950 82,775 90,300 99,330 141,900 165,550 198,660 248,325 331,100 496,650 and 993,300, with no remainder.
Since 993,300 cannot be divided by just 1 and 993,300, it is a composite number.