Base 29 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
55: | \[{29^{55}-1\over28}\] | 23 × 338141 × 732541 × 1193512007711<13> × 18944890940537<14> × 13323049382040421<17> × 5625377963242179726741631<25> |