A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 4813800 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 20 24 25 30 40 50 60 71 75 100 113 120 142 150 200 213 226 284 300 339 355 426 452 565 568 600 678 710 852 904 1,065 1,130 1,356 1,420 1,695 1,704 1,775 2,130 2,260 2,712 2,825 2,840 3,390 3,550 4,260 4,520 5,325 5,650 6,780 7,100 8,023 8,475 8,520 10,650 11,300 13,560 14,200 16,046 16,950 21,300 22,600 24,069 32,092 33,900 40,115 42,600 48,138 64,184 67,800 80,230 96,276 120,345 160,460 192,552 200,575 240,690 320,920 401,150 481,380 601,725 802,300 962,760 1,203,450 1,604,600 2,406,900 and 4,813,800, with no remainder.
Since 4,813,800 cannot be divided by just 1 and 4,813,800, it is not a prime number.