Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 555: | \[{7^{555}-1\over6}\] | 3 × 19 × 31 × 223 × 1481 × 2801 × 2887 × 6217 × 6661 × 159871 × 177379 × 219041 × 56713875643149053038693<23> × 4805345109492315767981401<25> × 96651302095748872822763048599<29> × 79894363827799256062402296847217731<35> × 19614484903893800144195694873969090325357462130596323038004994681963459760702504282004516541831276174705279621<110> × [35593632814580806800421887116756645995213333892759881489600222425012111661829494971360842168941886013114902231609364566590394316119943712666273229213435482079708987884024423699647063815389682534156285011624171<209>] |