A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2305200 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 17 20 24 25 30 34 40 48 50 51 60 68 75 80 85 100 102 113 120 136 150 170 200 204 226 240 255 272 300 339 340 400 408 425 452 510 565 600 678 680 816 850 904 1,020 1,130 1,200 1,275 1,356 1,360 1,695 1,700 1,808 1,921 2,040 2,260 2,550 2,712 2,825 3,390 3,400 3,842 4,080 4,520 5,100 5,424 5,650 5,763 6,780 6,800 7,684 8,475 9,040 9,605 10,200 11,300 11,526 13,560 15,368 16,950 19,210 20,400 22,600 23,052 27,120 28,815 30,736 33,900 38,420 45,200 46,104 48,025 57,630 67,800 76,840 92,208 96,050 115,260 135,600 144,075 153,680 192,100 230,520 288,150 384,200 461,040 576,300 768,400 1,152,600 and 2,305,200, with no remainder.
Since 2,305,200 cannot be divided by just 1 and 2,305,200, it is not a prime number.