A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2984112 can be evenly divided by 1 2 3 4 6 8 9 12 16 17 18 23 24 34 36 46 48 51 53 68 69 72 92 102 106 136 138 144 153 159 184 204 207 212 272 276 306 318 368 391 408 414 424 477 552 612 636 782 816 828 848 901 954 1,104 1,173 1,219 1,224 1,272 1,564 1,656 1,802 1,908 2,346 2,438 2,448 2,544 2,703 3,128 3,312 3,519 3,604 3,657 3,816 4,692 4,876 5,406 6,256 7,038 7,208 7,314 7,632 8,109 9,384 9,752 10,812 10,971 14,076 14,416 14,628 16,218 18,768 19,504 20,723 21,624 21,942 28,152 29,256 32,436 41,446 43,248 43,884 56,304 58,512 62,169 64,872 82,892 87,768 124,338 129,744 165,784 175,536 186,507 248,676 331,568 373,014 497,352 746,028 994,704 1,492,056 and 2,984,112, with no remainder.
Since 2,984,112 cannot be divided by just 1 and 2,984,112, it is not a prime number.