Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 185: | \[{28^{185}-1\over27}\] | 149 × 223 × 1481 × 20129 × 317831 × 637421 × 3493541 × 22994168371<11> × 36129368689<11> × 362872981217703889717460874623<30> × 1769867518793681297924222312087603004348203992816352612163393267534621721<73> × 524737022214681424195484171412263362998599618440419649343522770252038415852097559821590889710312229881152357521461<114> |