A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 7000056 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 17 18 19 21 24 28 34 36 38 42 43 51 56 57 63 68 72 76 84 86 102 114 119 126 129 133 136 152 153 168 171 172 204 228 238 252 258 266 301 306 323 342 344 357 387 399 408 456 476 504 516 532 602 612 646 684 714 731 774 798 817 903 952 969 1,032 1,064 1,071 1,197 1,204 1,224 1,292 1,368 1,428 1,462 1,548 1,596 1,634 1,806 1,938 2,142 2,193 2,261 2,394 2,408 2,451 2,584 2,709 2,856 2,907 2,924 3,096 3,192 3,268 3,612 3,876 4,284 4,386 4,522 4,788 4,902 5,117 5,418 5,719 5,814 5,848 6,536 6,579 6,783 7,224 7,353 7,752 8,568 8,772 9,044 9,576 9,804 10,234 10,836 11,438 11,628 13,158 13,566 13,889 14,706 15,351 17,157 17,544 18,088 19,608 20,349 20,468 21,672 22,876 23,256 26,316 27,132 27,778 29,412 30,702 34,314 40,698 40,936 41,667 45,752 46,053 51,471 52,632 54,264 55,556 58,824 61,404 68,628 81,396 83,334 92,106 97,223 102,942 111,112 122,808 125,001 137,256 162,792 166,668 184,212 194,446 205,884 250,002 291,669 333,336 368,424 388,892 411,768 500,004 583,338 777,784 875,007 1,000,008 1,166,676 1,750,014 2,333,352 3,500,028 and 7,000,056, with no remainder.
Since 7,000,056 cannot be divided by just 1 and 7,000,056, it is not a prime number.