A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2896950 can be evenly divided by 1 2 3 5 6 7 10 14 15 21 25 30 31 35 42 50 62 70 75 89 93 105 150 155 175 178 186 210 217 267 310 350 434 445 465 525 534 623 651 775 890 930 1,050 1,085 1,246 1,302 1,335 1,550 1,869 2,170 2,225 2,325 2,670 2,759 3,115 3,255 3,738 4,450 4,650 5,425 5,518 6,230 6,510 6,675 8,277 9,345 10,850 13,350 13,795 15,575 16,275 16,554 18,690 19,313 27,590 31,150 32,550 38,626 41,385 46,725 57,939 68,975 82,770 93,450 96,565 115,878 137,950 193,130 206,925 289,695 413,850 482,825 579,390 965,650 1,448,475 and 2,896,950, with no remainder.
Since 2,896,950 cannot be divided by just 1 and 2,896,950, it is not a prime number.