Base 17 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 217: | \[{17^{217}-1\over16}\] | 4093 × 6123493 × 25646167 × 454948313 × 8861352977<10> × 5972289411481674527<19> × 347340647626008901939025023<27> × 86230403971007851688205916195398486723335351489<47> × 28578524388884818072991473717378793829824706187183609<53> × 4799254144185696449350957430767130642850603778221148288787317843505130307871421117727<85> |