Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
481: | \[{3^{481}-1\over2}\] | 709957 × 797161 × 13097927 × 17189128703<11> × 772164427380203166258004598008121532652933<42> × 158982461311404178484994165729396654833380691960168733413383500440125079658663835847871704143444147949591666955759006821908383106752106064552411201072600059081<159> |