tables > repunit > 21

Base 21 Repunits

Table

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

* 562: \[{21^{562}-1\over20}\] 2 × 11 × 563 × 927120556211<12> × 1150975039764404997572049811<28> × [29099217709481048607109155872037640485817149268004029679476417787303763460517782280236066343245472879704182498154777915582258217471636809477170617656276319046467091063740926529877040762992350988708829121648031339193412671160705994277784475303224163713785937295496789674441447859679027863555354060417179509463875064385523710705147<329>] × [15892753205971844027866518751740895633605123980960947608887515696248802633149243464636205370762813091121953125746448240739346517815466788922971295945048550231293717956202497704186729170707863358451829803027380647922406831717426172894885921707621479073170104624570745269227384704273710038822235846546087841278385559855330817864221231628968834401418231886832748655499922801<371>]

Index range: 562 – 562 << prev next >>