A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 3611322 can be evenly divided by 1 2 3 6 9 11 13 18 22 23 26 33 39 46 61 66 69 78 99 117 122 138 143 183 198 207 234 253 286 299 366 414 429 506 549 598 671 759 793 858 897 1,098 1,287 1,342 1,403 1,518 1,586 1,794 2,013 2,277 2,379 2,574 2,691 2,806 3,289 4,026 4,209 4,554 4,758 5,382 6,039 6,578 7,137 8,418 8,723 9,867 12,078 12,627 14,274 15,433 17,446 18,239 19,734 25,254 26,169 29,601 30,866 36,478 46,299 52,338 54,717 59,202 78,507 92,598 109,434 138,897 157,014 164,151 200,629 277,794 328,302 401,258 601,887 1,203,774 1,805,661 and 3,611,322, with no remainder.
Since 3,611,322 cannot be divided by just 1 and 3,611,322, it is not a prime number.