tables > repunit > 31

Base 31 Repunits

Table

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Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>

* 263: \[{31^{263}-1\over30}\] 1579 × 610776616029769050409<21> × 56961765068891482189693<23> × [102602100989851467449612149466667083001227772697686961127247836554103014933500929962860987160868393022344844355259017049211014874717997688262771789041992326962496729800859329238346655052003478814480128996951693449794080814685079223658958433989531213125166020898576987183707939406015897809540446244668117491201507531811037346924679514017180797511<345>]

Index range: 263 – 263 << prev next >>