Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 905: | \[{4^{905}-1\over3}\] | 11 × 31 × 1811 × 43441 × 121271 × 1164193 × 7648337 × 31675363 × 1163487911 × 127002291721<12> × 7923871097285295625344647665764672671<37> × 17810163630112624579342811733978085990447907<44> × 225290221737294291262043529758363468748214801<45> × 50620094494730690929551913249948101083228214631<47> × 2048815180215513463388335576071214168229077677858641809231081<61> × 136857150107657671927053274018711605875258579905564395736937259817775900961299060407392037232236346851<102> × 398578053019900248484894641069552407356642041911015002155444120375550992339839514114783311938330588905649621355978587061168712835401078826700413589317332841<156> |