A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 4155300 can be evenly divided by 1 2 3 4 5 6 9 10 12 15 18 19 20 25 27 30 36 38 45 50 54 57 60 75 76 81 90 95 100 108 114 135 150 162 171 180 190 225 228 243 270 285 300 324 342 380 405 450 475 486 513 540 570 675 684 729 810 855 900 950 972 1,026 1,140 1,215 1,350 1,425 1,458 1,539 1,620 1,710 1,900 2,025 2,052 2,187 2,430 2,565 2,700 2,850 2,916 3,078 3,420 3,645 4,050 4,275 4,374 4,617 4,860 5,130 5,700 6,075 6,156 7,290 7,695 8,100 8,550 8,748 9,234 10,260 10,935 12,150 12,825 13,851 14,580 15,390 17,100 18,225 18,468 21,870 23,085 24,300 25,650 27,702 30,780 36,450 38,475 41,553 43,740 46,170 51,300 54,675 55,404 69,255 72,900 76,950 83,106 92,340 109,350 115,425 138,510 153,900 166,212 207,765 218,700 230,850 277,020 346,275 415,530 461,700 692,550 831,060 1,038,825 1,385,100 2,077,650 and 4,155,300, with no remainder.
Since 4,155,300 cannot be divided by just 1 and 4,155,300, it is not a prime number.