Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 413: | \[{8^{413}-1\over7}\] | 7 × 127 × 337 × 179951 × 184081 × 263483263 × 2006647231 × 27989941729<11> × 3203431780337<13> × 9213624084535989031<19> × 6774027833473375976915021445395839<34> × 1102272524932426318899113975892645895609<40> × 21256743751927370220630952377105576570016395501658460697868351<62> × 167087803778100685137282215256230683687068949094424492832211188268061451903148929<81> × 11763111754911034189958819922265626030162852411746099534272282742979110559598919617<83> |