Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 344: | \[{28^{344}-1\over27}\] | 5 × 29 × 157 × 173 × 1721 × 2753 × 3613 × 5849 × 31649 × 60029 × 172001 × 614657 × 684217 × 24385817 × 62167681 × 1392096449 × 105942074311<12> × 23321405465263<14> × 280931610243662693509<21> × 17068111104046291434149<23> × 6614496361616478724735573264857257<34> × 276629984753390963314801605757308133486649<42> × 40848716771148807687245758923041411219985871202629<50> × 1819754817173479521710558023419606630408591326649895876777<58> × 133506353645504671510178236137835890074292164132101012631385372887118020775123738199060067827254013689085349607379026311430216871355040289218052295987476714608876759686679605713<177> |