A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 8951800 can be evenly divided by 1 2 4 5 8 10 11 13 20 22 25 26 40 44 50 52 55 65 88 100 104 110 130 143 200 220 260 275 286 313 325 440 520 550 572 626 650 715 1,100 1,144 1,252 1,300 1,430 1,565 2,200 2,504 2,600 2,860 3,130 3,443 3,575 4,069 5,720 6,260 6,886 7,150 7,825 8,138 12,520 13,772 14,300 15,650 16,276 17,215 20,345 27,544 28,600 31,300 32,552 34,430 40,690 44,759 62,600 68,860 81,380 86,075 89,518 101,725 137,720 162,760 172,150 179,036 203,450 223,795 344,300 358,072 406,900 447,590 688,600 813,800 895,180 1,118,975 1,790,360 2,237,950 4,475,900 and 8,951,800, with no remainder.
Since 8,951,800 cannot be divided by just 1 and 8,951,800, it is not a prime number.