A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 118800 can be evenly divided by 1 2 3 4 5 6 8 9 10 11 12 15 16 18 20 22 24 25 27 30 33 36 40 44 45 48 50 54 55 60 66 72 75 80 88 90 99 100 108 110 120 132 135 144 150 165 176 180 198 200 216 220 225 240 264 270 275 297 300 330 360 396 400 432 440 450 495 528 540 550 594 600 660 675 720 792 825 880 900 990 1,080 1,100 1,188 1,200 1,320 1,350 1,485 1,584 1,650 1,800 1,980 2,160 2,200 2,376 2,475 2,640 2,700 2,970 3,300 3,600 3,960 4,400 4,752 4,950 5,400 5,940 6,600 7,425 7,920 9,900 10,800 11,880 13,200 14,850 19,800 23,760 29,700 39,600 59,400 and 118,800, with no remainder.
Since 118,800 cannot be divided by just 1 and 118,800, it is not a prime number.