Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 399: | \[{7^{399}-1\over6}\] | 3 × 192 × 29 × 419 × 4733 × 19609 × 39109981 × 401563177 × 879399649 × 2662276961 × 11898664849<11> × 4534166740403<13> × 373740808373213<15> × 6957533874046531<16> × 897558513407803666357<21> × 44565794432124976145013684073215440137<38> × 6931988925147970715443756192320558859369717<43> × 1491795958375513642426565124210730643931478615066871228523778950151875869378196710880709977712386418670048447341464914847587718695713<133> |