Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 518: | \[{7^{518}-1\over6}\] | 23 × 29 × 113 × 149 × 223 × 911 × 2887 × 3109 × 4733 × 65269 × 269879 × 4022839801 × 2057255879241720282007<22> × 4805345109492315767981401<25> × 465664617566727851156624881<27> × 15572244900182528777225808449<29> × 1821670283600913867920344653190399<34> × 70067387496614602431591410975206848853<38> × 2993084521054460194292286922737139633763782459931<49> × 357708888729481429441295130414301389734167320382217282028474835603757<69> × 4105565335483009892405469384537186162336640263688626513538197586407434630567675699756450562264314334763133<106> |