Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 642: | \[{8^{642}-1\over7}\] | 33 × 19 × 73 × 643 × 154723 × 14662639 × 20636399209<11> × 17866285599391<14> × 3156148413859611691<19> × 480625710015394052365153<24> × 5718761969788697451457489<25> × 84115747449047881488635567801<29> × 162259276829213363391578010288127<33> × 210516800089955301807292488792588188869650399862249<51> × 4697382335699080991160439732748977071469258244120906774840307806403019635933401543777637481<91> × 3629662994008153848429240162600396180519766791204932405950630091372441619019203827105766225151<94> × 101443667859887079436299954591196509470951314402656004727572728852322747306592549750125406592460897789636565968195526159310172440134942352533411032672207185763232252251633819<174> |