Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 388: | \[{28^{388}-1\over27}\] | 5 × 29 × 157 × 389 × 971 × 11811109 × 26387299 × 1077512962627<13> × 23005775513293<14> × 709631467209875315796771044618306561153982255910640419690230176559964795222396960041765720122712469579101140989664777<117> × 795401677897930484299201663590387252223663785613499239312027910747885558034477362663957428176284430077676935599931776434458904731<129> × [3104213233032569914388008276242644693528855957433742515418913978582176512601477065031322690303537360663348905182602740281390321661846044915019149915346062498890403666573722851837407428005532660559165643184138708195923644410202662965470883182883669585550536595651509<265>] |