Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 556: | \[{7^{556}-1\over6}\] | 24 × 52 × 557 × 19739 × 673039 × 2434989769 × 270980007941<12> × 5312442648966139012589<22> × 10311220574264857306049<23> × 190705279598948669274660288301207361<36> × 651666519182971782190402264651775450396158503528225547931<57> × 36907186032510520494090542644478414425042667765511537140671634321685208913758955545681985719375774106220917<107> × 25441379159889245310997904443533239958007902497519608481053270538810326728569390374931535953256393312376756169177900237736716152194615933330845642357698683242015728821539496710556098132970709<191> |