Base 6 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 261: | \[{6^{261}-1\over5}\] | 19 × 43 × 523 × 2467 × 2694217 × 1833921547 × 4706691035521<13> × 467281506322297<15> × 1357610070580129<16> × 1088767101178107721<19> × 7369130657357778596659<22> × 200622456937168029534097369796896585478797577226516730244273499267849858146604979833025526230171<96> |