A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 8748180 can be evenly divided by 1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 28 30 35 36 42 45 53 60 63 70 84 90 105 106 126 131 140 159 180 210 212 252 262 265 315 318 371 393 420 477 524 530 630 636 655 742 786 795 917 954 1,060 1,113 1,179 1,260 1,310 1,484 1,572 1,590 1,834 1,855 1,908 1,965 2,226 2,358 2,385 2,620 2,751 3,180 3,339 3,668 3,710 3,930 4,452 4,585 4,716 4,770 5,502 5,565 5,895 6,678 6,943 7,420 7,860 8,253 9,170 9,540 11,004 11,130 11,790 13,356 13,755 13,886 16,506 16,695 18,340 20,829 22,260 23,580 27,510 27,772 33,012 33,390 34,715 41,265 41,658 48,601 55,020 62,487 66,780 69,430 82,530 83,316 97,202 104,145 124,974 138,860 145,803 165,060 194,404 208,290 243,005 249,948 291,606 312,435 416,580 437,409 486,010 583,212 624,870 729,015 874,818 972,020 1,249,740 1,458,030 1,749,636 2,187,045 2,916,060 4,374,090 and 8,748,180, with no remainder.
Since 8,748,180 cannot be divided by just 1 and 8,748,180, it is not a prime number.