Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 344: | \[{3^{344}-1\over2}\] | 24 × 5 × 41 × 173 × 431 × 470593 × 226519873 × 2641485701 × 55473422113<11> × 903239908009<12> × 21376165893692833<17> × 380808546861411923<18> × 82064241848634269407<20> × 29241916907334820616557688889440878559426168577846725809<56> |