Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 436: | \[{28^{436}-1\over27}\] | 5 × 29 × 157 × 1091 × 117721 × 10549457 × 116573926477<12> × 148060551520249<15> × 17413455818811630516163013<26> × 258694036490465188007661621181<30> × 24652851471194674096518495172640669<35> × 31215766331257946957942729353107254419588492535361428593<56> × 1963462180676064596958518582997946825547322996309731299402231907<64> × 62535802620990949936746430170545667663012473464884933074454722350506559649629260520569707876000143234381<104> × [1493677519463129230066364785249379313863862055461122753163241559713817553939795527279848885943314689282564098642258170582743355133001747841098610134391770308796887886041829825280534753300905996034284478502008145183814558937426724478012258241585079863443704212475235224991077<274>] |