A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 7150650 can be evenly divided by 1 2 3 5 6 10 13 15 19 25 26 30 38 39 50 57 65 75 78 95 114 130 150 190 193 195 247 285 325 386 390 475 494 570 579 650 741 950 965 975 1,158 1,235 1,425 1,482 1,930 1,950 2,470 2,509 2,850 2,895 3,667 3,705 4,825 5,018 5,790 6,175 7,334 7,410 7,527 9,650 11,001 12,350 12,545 14,475 15,054 18,335 18,525 22,002 25,090 28,950 36,670 37,050 37,635 47,671 55,005 62,725 75,270 91,675 95,342 110,010 125,450 143,013 183,350 188,175 238,355 275,025 286,026 376,350 476,710 550,050 715,065 1,191,775 1,430,130 2,383,550 3,575,325 and 7,150,650, with no remainder.
Since 7,150,650 cannot be divided by just 1 and 7,150,650, it is not a prime number.