Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
259: | \[{7^{259}-1\over6}\] | 29 × 223 × 2887 × 3109 × 4733 × 65269 × 4805345109492315767981401<25> × 357708888729481429441295130414301389734167320382217282028474835603757<69> × 4105565335483009892405469384537186162336640263688626513538197586407434630567675699756450562264314334763133<106> |