Base 17 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 212: | \[{17^{212}-1\over16}\] | 22 × 32 × 5 × 29 × 107 × 1061 × 33179 × 40992110362783761677<20> × 4375997670680275555605273053<28> × 2336661313161818672990011193252900057<37> × 62455829461699068064302297437204524861<38> × 1494286214623237388491714984882811051550425483917<49> × 58215481567677569334467656316732247442592836913646101470198422226978097667809<77> |