tables > repunit > 21

Base 21 Repunits

Table

Viewing: 821 – 821 << prev next >>

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

* 821: \[{21^{821}-1\over20}\] 420353 × 919837503236570201560796483<27> × 3834789430611805301869508809<28> × 4454478427193548918226263147<28> × [2637225919210264753528324678188961821865755112141518675637763813948599829330921830485214858797748644144018251300715631712520454201856691391423331497069338813046796179321729493636467847610967410167509856154994846832262007788369471144190702267371410569244571557087364853432275302099219230771828222749018844747683532271522537158957514062184803746668328771644853290188524093071510188588300421753531904526215751699018086469992521845535303246706079148307998491003457308830715853254483545870757348322029491253539469213742969209501645476593075005436979463138843811103790712180211553809379779627865841116052281440074167977071807463069232660534507532308257096301317577568045528081613141017004871308691076007571658803907654703855246138418444240381354465655711148751762084139281907299629204164139387458659820877469749668556231521214795681951868856865332796377336721446979931339747393454491044490158724863739789102141081955611088270666231711494590783687190455928456985438901772498255538725957218369535751810773<997>]

Index range: 821 – 821 << prev next >>