A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 8080800 can be evenly divided by 1 2 3 4 5 6 7 8 10 12 13 14 15 16 20 21 24 25 26 28 30 32 35 37 39 40 42 48 50 52 56 60 65 70 74 75 78 80 84 91 96 100 104 105 111 112 120 130 140 148 150 156 160 168 175 182 185 195 200 208 210 222 224 240 259 260 273 280 296 300 312 325 336 350 364 370 390 400 416 420 444 455 480 481 518 520 525 546 555 560 592 600 624 650 672 700 728 740 777 780 800 840 888 910 925 962 975 1,036 1,040 1,050 1,092 1,110 1,120 1,184 1,200 1,248 1,295 1,300 1,365 1,400 1,443 1,456 1,480 1,554 1,560 1,680 1,776 1,820 1,850 1,924 1,950 2,072 2,080 2,100 2,184 2,220 2,275 2,400 2,405 2,590 2,600 2,730 2,775 2,800 2,886 2,912 2,960 3,108 3,120 3,360 3,367 3,552 3,640 3,700 3,848 3,885 3,900 4,144 4,200 4,368 4,440 4,550 4,810 5,180 5,200 5,460 5,550 5,600 5,772 5,920 6,216 6,240 6,475 6,734 6,825 7,215 7,280 7,400 7,696 7,770 7,800 8,288 8,400 8,736 8,880 9,100 9,620 10,101 10,360 10,400 10,920 11,100 11,544 12,025 12,432 12,950 13,468 13,650 14,430 14,560 14,800 15,392 15,540 15,600 16,800 16,835 17,760 18,200 19,240 19,425 20,202 20,720 21,840 22,200 23,088 24,050 24,864 25,900 26,936 27,300 28,860 29,600 31,080 31,200 33,670 36,075 36,400 38,480 38,850 40,404 41,440 43,680 44,400 46,176 48,100 50,505 51,800 53,872 54,600 57,720 62,160 67,340 72,150 72,800 76,960 77,700 80,808 84,175 88,800 96,200 101,010 103,600 107,744 109,200 115,440 124,320 134,680 144,300 155,400 161,616 168,350 192,400 202,020 207,200 218,400 230,880 252,525 269,360 288,600 310,800 323,232 336,700 384,800 404,040 505,050 538,720 577,200 621,600 673,400 808,080 1,010,100 1,154,400 1,346,800 1,616,160 2,020,200 2,693,600 4,040,400 and 8,080,800, with no remainder.
Since 8,080,800 cannot be divided by just 1 and 8,080,800, it is not a prime number.