tables > repunit > 21

Base 21 Repunits

Table

Viewing: 477 – 477 << prev next >>

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

* 477: \[{21^{477}-1\over20}\] 463 × 1697 × 12721 × 85775383 × 207612155793974069<18> × 372515213872960388437<21> × 4555268603071594349347155493<28> × 2018656483852209137639505692992077007<37> × 75685729452842223963000669830840612177358577<44> × 158879028706827226982727678188557736958029273812511839<54> × [34070072635734490099377071791156146678606112373239092062805732541109077341705076622239278460345807656482692873248422467369822078724277966499082019459840179022436969644332929091709111881888087956467923903195552030882713567291675005395405344408884269650891363573611161480235497003450623406066426185578075915781370745815203760880031935955677948153356234482246795135208820524565914946426540227362973304821664884688721<413>]

Index range: 477 – 477 << prev next >>