A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2002104 can be evenly divided by 1 2 3 4 6 8 9 12 13 18 23 24 26 27 31 36 39 46 52 54 62 69 72 78 92 93 104 108 117 124 138 156 184 186 207 216 234 248 276 279 299 312 351 372 403 414 468 552 558 598 621 702 713 744 806 828 837 897 936 1,116 1,196 1,209 1,242 1,404 1,426 1,612 1,656 1,674 1,794 2,139 2,232 2,392 2,418 2,484 2,691 2,808 2,852 3,224 3,348 3,588 3,627 4,278 4,836 4,968 5,382 5,704 6,417 6,696 7,176 7,254 8,073 8,556 9,269 9,672 10,764 10,881 12,834 14,508 16,146 17,112 18,538 19,251 21,528 21,762 25,668 27,807 29,016 32,292 37,076 38,502 43,524 51,336 55,614 64,584 74,152 77,004 83,421 87,048 111,228 154,008 166,842 222,456 250,263 333,684 500,526 667,368 1,001,052 and 2,002,104, with no remainder.
Since 2,002,104 cannot be divided by just 1 and 2,002,104, it is not a prime number.