Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 195: | \[{7^{195}-1\over6}\] | 3 × 19 × 31 × 131 × 2801 × 157951 × 159871 × 486643 × 787021 × 7524739 × 44975113 × 567538141 × 14046059431<11> × 16148168401<11> × 4446437759531<13> × 434502978835771<15> × 196569087309473486919368024394634095901450148683467001720304131<63> |