A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 3001050 can be evenly divided by 1 2 3 5 6 9 10 13 15 18 19 25 26 27 30 38 39 45 50 54 57 65 75 78 81 90 95 114 117 130 135 150 162 171 190 195 225 234 243 247 270 285 325 342 351 390 405 450 475 486 494 513 570 585 650 675 702 741 810 855 950 975 1,026 1,053 1,170 1,215 1,235 1,350 1,425 1,482 1,539 1,710 1,755 1,950 2,025 2,106 2,223 2,430 2,470 2,565 2,850 2,925 3,078 3,159 3,510 3,705 4,050 4,275 4,446 4,617 5,130 5,265 5,850 6,075 6,175 6,318 6,669 7,410 7,695 8,550 8,775 9,234 10,530 11,115 12,150 12,350 12,825 13,338 15,390 15,795 17,550 18,525 20,007 22,230 23,085 25,650 26,325 31,590 33,345 37,050 38,475 40,014 46,170 52,650 55,575 60,021 66,690 76,950 78,975 100,035 111,150 115,425 120,042 157,950 166,725 200,070 230,850 300,105 333,450 500,175 600,210 1,000,350 1,500,525 and 3,001,050, with no remainder.
Since 3,001,050 cannot be divided by just 1 and 3,001,050, it is not a prime number.