A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2280096 can be evenly divided by 1 2 3 4 6 7 8 9 12 13 14 16 18 21 24 26 27 28 29 32 36 39 42 48 52 54 56 58 63 72 78 84 87 91 96 104 108 112 116 117 126 144 156 168 174 182 189 203 208 216 224 232 234 252 261 273 288 312 336 348 351 364 377 378 406 416 432 464 468 504 522 546 609 624 672 696 702 728 754 756 783 812 819 864 928 936 1,008 1,044 1,092 1,131 1,218 1,248 1,392 1,404 1,456 1,508 1,512 1,566 1,624 1,638 1,827 1,872 2,016 2,088 2,184 2,262 2,436 2,457 2,639 2,784 2,808 2,912 3,016 3,024 3,132 3,248 3,276 3,393 3,654 3,744 4,176 4,368 4,524 4,872 4,914 5,278 5,481 5,616 6,032 6,048 6,264 6,496 6,552 6,786 7,308 7,917 8,352 8,736 9,048 9,744 9,828 10,179 10,556 10,962 11,232 12,064 12,528 13,104 13,572 14,616 15,834 18,096 19,488 19,656 20,358 21,112 21,924 23,751 25,056 26,208 27,144 29,232 31,668 36,192 39,312 40,716 42,224 43,848 47,502 54,288 58,464 63,336 71,253 78,624 81,432 84,448 87,696 95,004 108,576 126,672 142,506 162,864 175,392 190,008 253,344 285,012 325,728 380,016 570,024 760,032 1,140,048 and 2,280,096, with no remainder.
Since 2,280,096 cannot be divided by just 1 and 2,280,096, it is not a prime number.