Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 651: | \[{8^{651}-1\over7}\] | 7 × 73 × 127 × 337 × 1303 × 5209 × 16183 × 34039 × 62497 × 92737 × 649657 × 1437967 × 66929311 × 152892559 × 2147483647 × 833732508401263<15> × 658812288653553079<18> × 6268703933840364033151<22> × 378428804431424484082633<24> × 2034439836951867299888617<25> × 1191622782866437328993110351<28> × 2626317528364475422451291074871442782545497447474562640041779493971236636466847<79> × [1443893935532128812490147336508593863631019659684152067354414117887728576830558383112752380102001796632824248221755674195580526930445991794335163332417432681282224628949197211258069197668373479595534831170646358073422249025681218460438745288069004481093153448237873178507915841085686627194467107225774374654969<310>] |