Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 122: | \[{28^{122}-1\over27}\] | 29 × 6101 × 11743477 × 109721921 × 584814157619<12> × 108152440326426913<18> × 11071894699054087656875578952698529117084924031399006144383<59> × 82937470333304432588112137628345562560268136099692106579153845373053<68> |