A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 7002072 can be evenly divided by 1 2 3 4 6 7 8 9 11 12 14 18 21 22 24 27 28 33 36 42 44 54 56 63 66 72 77 84 88 99 108 126 132 154 168 189 198 216 231 252 264 297 308 378 396 421 462 504 594 616 693 756 792 842 924 1,188 1,263 1,386 1,512 1,684 1,848 2,079 2,376 2,526 2,772 2,947 3,368 3,789 4,158 4,631 5,052 5,544 5,894 7,578 8,316 8,841 9,262 10,104 11,367 11,788 13,893 15,156 16,632 17,682 18,524 22,734 23,576 26,523 27,786 30,312 32,417 35,364 37,048 41,679 45,468 53,046 55,572 64,834 70,728 79,569 83,358 90,936 97,251 106,092 111,144 125,037 129,668 159,138 166,716 194,502 212,184 250,074 259,336 291,753 318,276 333,432 389,004 500,148 583,506 636,552 778,008 875,259 1,000,296 1,167,012 1,750,518 2,334,024 3,501,036 and 7,002,072, with no remainder.
Since 7,002,072 cannot be divided by just 1 and 7,002,072, it is not a prime number.