A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 4317600 can be evenly divided by 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 25 28 30 32 35 40 42 48 50 56 60 70 75 80 84 96 100 105 112 120 140 150 160 168 175 200 210 224 240 257 280 300 336 350 400 420 480 514 525 560 600 672 700 771 800 840 1,028 1,050 1,120 1,200 1,285 1,400 1,542 1,680 1,799 2,056 2,100 2,400 2,570 2,800 3,084 3,360 3,598 3,855 4,112 4,200 5,140 5,397 5,600 6,168 6,425 7,196 7,710 8,224 8,400 8,995 10,280 10,794 12,336 12,850 14,392 15,420 16,800 17,990 19,275 20,560 21,588 24,672 25,700 26,985 28,784 30,840 35,980 38,550 41,120 43,176 44,975 51,400 53,970 57,568 61,680 71,960 77,100 86,352 89,950 102,800 107,940 123,360 134,925 143,920 154,200 172,704 179,900 205,600 215,880 269,850 287,840 308,400 359,800 431,760 539,700 616,800 719,600 863,520 1,079,400 1,439,200 2,158,800 and 4,317,600, with no remainder.
Since 4,317,600 cannot be divided by just 1 and 4,317,600, it is not a prime number.