tables > repunit > 20

Base 20 Repunits

Table

Viewing: 391 – 391 << prev next >>

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

* 391: \[{20^{391}-1\over19}\] 691 × 1381 × 3911 × 616999 × 129787759 × 33729002880899<14> × 689852631578947368421<21> × 46266279097921483078651<23> × [8250353684851131897225734044313462947985569501987828293461196462417896458466883107848525119022368178794344865125245741977560835346412695683884691342211025508915212855253474272206121730573642885222727580629388449521253980775675170536947502805301581357762783652856539134219872215878966067439532946074358737208003889825614130123230196594837052310957237531751910538331160956435128990692806552108434485485254559715608343493783401169<427>]

Index range: 391 – 391 << prev next >>