Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 647: | \[{3^{647}-1\over2}\] | 9059 × 87531337 × 633889439015543<15> × 442835641420911902056735643278356653800144245791<48> × 1119236596891616895003467405967067249611710940171567819851064871679690492836090987855753860718290056480514296414433042813621272551027735139068901405067153716382785458952869740614865316910665266748384629649131911877574935087364844889767<235> |