Base 6 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 551: | \[{6^{551}-1\over5}\] | 191 × 1103 × 638073026189<12> × 751882136381<12> × 7025263308784553161181<22> × 7369130657357778596659<22> × 10944361845979503835965839<26> × 132954050553177272598066529<27> × [15162438256222844786103392778127230766416440190233595308402429424208755632526358906361544710443763166810164717686222812135613177263596884195047028237720799850640411498799258842491792590878075267191516465866662142273056877274356258766126924700276283087044926510987898652932537858136805005847424101387263107<305>] |