Переведем число 1667718169960751710 в троичное вот так:
Целая часть числа находится делением на основание новой системы счисления:
16677181699607517 | 3 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
-16677181699607517 | 5559060566535839 | 3 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
0 | -5559060566535837 | 1853020188845279 | 3 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| 2 | -1853020188845277 | 617673396281759 | 3 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | 2 | -617673396281757 | 205891132093919 | 3 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | 2 | -205891132093917 | 68630377364639 | 3 | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | 2 | -68630377364637 | 22876792454879 | 3 | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | 2 | -22876792454877 | 7625597484959 | 3 | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | 2 | -7625597484957 | 2541865828319 | 3 | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | 2 | -2541865828317 | 847288609439 | 3 | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | 2 | -847288609437 | 282429536479 | 3 | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | 2 | -282429536478 | 94143178826 | 3 | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | 1 | -94143178824 | 31381059608 | 3 | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | 2 | -31381059606 | 10460353202 | 3 | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | 2 | -10460353200 | 3486784400 | 3 | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | 2 | -3486784398 | 1162261466 | 3 | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | 2 | -1162261464 | 387420488 | 3 | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | 2 | -387420486 | 129140162 | 3 | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | 2 | -129140160 | 43046720 | 3 | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | 2 | -43046718 | 14348906 | 3 | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | 2 | -14348904 | 4782968 | 3 | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | 2 | -4782966 | 1594322 | 3 | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | 2 | -1594320 | 531440 | 3 | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | 2 | -531438 | 177146 | 3 | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | 2 | -177144 | 59048 | 3 | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | 2 | -59046 | 19682 | 3 | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | 2 | -19680 | 6560 | 3 | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | 2 | -6558 | 2186 | 3 | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | 2 | -2184 | 728 | 3 | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | 2 | -726 | 242 | 3 | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 2 | -240 | 80 | 3 | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2 | -78 | 26 | 3 | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2 | -24 | 8 | 3 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2 | -6 | 2 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2 | | |
 |
В результате преобразования получилось:
1667718169960751710 = 22222222222222222222222122222222203
Окончательный ответ: 1667718169960751710 = 22222222222222222222222122222222203