Base 6 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
205: | \[{6^{205}-1\over5}\] | 5 × 311 × 8648131 × 66571969781<11> × 28852807210022072371<20> × 1854850885886497427178961<25> × 13854638174912289904150868633673163430846084302190465596932272615548696463090153351808638086901<95> |