Base 6 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 133: | \[{6^{133}-1\over5}\] | 191 × 11971 × 55987 × 188861 × 1101773 × 638073026189<12> × 164331230229374083<18> × 2233934314632639115197089640522599067817629985127899<52> |