Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 442: | \[{18^{442}-1\over17}\] | 17 × 19 × 79 × 131 × 137 × 443 × 521 × 2081 × 72931 × 30966079 × 4020180841 × 29759719289<11> × 1895634885375961<16> × 7563707819165039903<19> × 313769827308569076761943138309329491957488865716708510676198159679741233146114554095962256025982169985101728616729805168146431862210844811875600947759838574575111151650563697949172988824812261061841868068323319294354619202457264735569<234> × 148898357548929506310154112533683321686239474824708978515256103663950984836055138964642842500943195069367300794399148783600185856875709867820173186330694955874883547657531600692781568984028960946126169479835226477655144860889442081474321<237> |