A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 8863050 can be evenly divided by 1 2 3 5 6 7 10 14 15 21 23 25 30 35 42 46 50 69 70 75 105 115 138 150 161 175 210 230 322 345 350 367 483 525 575 690 734 805 966 1,050 1,101 1,150 1,610 1,725 1,835 2,202 2,415 2,569 3,450 3,670 4,025 4,830 5,138 5,505 7,707 8,050 8,441 9,175 11,010 12,075 12,845 15,414 16,882 18,350 24,150 25,323 25,690 27,525 38,535 42,205 50,646 55,050 59,087 64,225 77,070 84,410 118,174 126,615 128,450 177,261 192,675 211,025 253,230 295,435 354,522 385,350 422,050 590,870 633,075 886,305 1,266,150 1,477,175 1,772,610 2,954,350 4,431,525 and 8,863,050, with no remainder.
Since 8,863,050 cannot be divided by just 1 and 8,863,050, it is not a prime number.