Base 9 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 177: | \[{9^{177}-1\over8}\] | 7 × 13 × 709 × 3187 × 76819 × 14425532687<11> × 15743388547<11> × 38926393657<11> × 1669126011067<13> × 363002702388730267<18> × 489769993189671059<18> × 2224898159852613649<19> × 1108439448677340328268341<25> × 9736622508037946817946068730077829<34> |