A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 9415350 can be evenly divided by 1 2 3 5 6 7 9 10 14 15 18 21 25 30 35 42 45 49 50 61 63 70 75 90 98 105 122 126 147 150 175 183 210 225 245 294 305 315 343 350 366 427 441 450 490 525 549 610 630 686 735 854 882 915 1,029 1,050 1,098 1,225 1,281 1,470 1,525 1,575 1,715 1,830 2,058 2,135 2,205 2,450 2,562 2,745 2,989 3,050 3,087 3,150 3,430 3,675 3,843 4,270 4,410 4,575 5,145 5,490 5,978 6,174 6,405 7,350 7,686 8,575 8,967 9,150 10,290 10,675 11,025 12,810 13,725 14,945 15,435 17,150 17,934 19,215 20,923 21,350 22,050 25,725 26,901 27,450 29,890 30,870 32,025 38,430 41,846 44,835 51,450 53,802 62,769 64,050 74,725 77,175 89,670 96,075 104,615 125,538 134,505 149,450 154,350 188,307 192,150 209,230 224,175 269,010 313,845 376,614 448,350 523,075 627,690 672,525 941,535 1,046,150 1,345,050 1,569,225 1,883,070 3,138,450 4,707,675 and 9,415,350, with no remainder.
Since 9,415,350 cannot be divided by just 1 and 9,415,350, it is not a prime number.