Base 6 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
181: | \[{6^{181}-1\over5}\] | 39821 × 12684206910817829<17> × 277351701972446055460273290021643040866933558956498128941432837743908106572043434563228925029360457738510095499722563859<120> |