Base 9 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 218: | \[{9^{218}-1\over8}\] | 2 × 5 × 1091 × 2617 × 5233 × 521402591 × 1992772009 × 3499901929 × 239789806103<12> × 5933538193981<13> × 7696680097963<13> × 27866471458012723<17> × 10624346875389299603<20> × 751413635152391220555020028806404277682678388634430663962506269690398417622699238580739045812809<96> |