Base 21 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 602: | \[{21^{602}-1\over20}\] | 2 × 11 × 432 × 173 × 631 × 3319 × 3613 × 15739 × 126851 × 81867661 × 169367548429<12> × 398077454461<12> × 1163308526467<13> × 478811691676843729951<21> × 35842614220783025524408588074144786493150233831596714503<56> × [4163878775421879650272986693558125550913572905998989570434617752588694345905971878704500459097346945034994325293702122585782903858594795065424529619444011603859702167162249833831638404548575041579530348396598832472401561233292188924056673359714494173065736185550280420300872852666444331293816664437434983616407800614929661<322>] × 9699214344282554468171662045776472091017152517801007915911936489981414597066618208346490491024523379649346501972806540602780485394443699297551535059961141074561553734445183308183183710882754039876213370975979075672566804219497104668066380772842335199783682922918880192565045378023548212174247192946376670185947578568158676384919<328> |