Base 6 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 305: | \[{6^{305}-1\over5}\] | 5 × 311 × 86011 × 42461491 × 80057377 × 2112242585382465957468782381<28> × 17252803354297421346943980322273<32> × 24506226188880631899928133376464081634967825718604821<53> × 1068071855703783761181123461268973104294098322369041790833437139214193724057795181478916448908089214641<103> |