Base 9 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 141: | \[{9^{141}-1\over8}\] | 7 × 13 × 283 × 1223 × 16921 × 21997 × 256057 × 5112661 × 96656723 × 161969595577<12> × 1534179947851<13> × 2031161085853<13> × 93953407627827115729<20> × 165301473942399079669<21> × 3798402051319990403467<22> |