Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 667: | \[{5^{667}-1\over4}\] | 59 × 8971 × 35671 × 332207361361<12> × 1857534409721<13> × 22125996444329<14> × 227266403930790435452502379<27> × 53555964798309822671223167664050971<35> × [1301165989301942394445869674574188309213480715997900776936546807671119767494352676003898120182119592303467699940231192762797899409299406451210745348665929166156802792299157259301046890989590204740534888162320190193541581146463464614464612787331726621681837829860635213610187152165289256701801122243963436106871601693949258565761981619157431603184200683629489<358>] |