Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 259: | \[{28^{259}-1\over27}\] | 113 × 149 × 223 × 1481 × 20129 × 4422461 × 36129368689<11> × 362872981217703889717460874623<30> × [3718266405380789303618008310381583975741799876397191155087438886440501666066376616832567555264072736948900209466487366465880437103634326849662164434270493969908585739042895893518747114510262801460389298647481918152488474903962720652255367065318532630232332945818111213572840115109761428176578560529572933056380901<313>] |