Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 268: | \[{28^{268}-1\over27}\] | 5 × 29 × 157 × 269 × 18493 × 1810877 × 8790632089<10> × 1313661738407<13> × 308410564740709<15> × 11112480612990130458797<23> × 32245332393952828598809<23> × 2584374183981117282063066367234633<34> × 7949556033336813725827107334431478849<37> × 39629149774235919086803410436533512071<38> × 181410196271845305448098167080092169154626622109735977<54> × 8515488777545809574252900816572650580619264994750394645483<58> × 775491968920206673478944692998859543391704199685306816079182726490119<69> |