tables > repunit > 21

Base 21 Repunits

Table

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

227: 21227−120 2646531892461378714335381<25> × 26307087968534536492435242740004010840943942590798885871148425394113792980077092659997460806684342719378550896650637248771026433450955627842768759916085264300859428543370123948394983256199640706235988774243966026348167416301453163054427612057896242226915201929481038443667187<275>

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