tables > repunit > 21

Base 21 Repunits

Table

Viewing: 689 – 689 << prev next >>

(available: 0-999)

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

* 689: \[{21^{689}-1\over20}\] 79 × 1697 × 129533 × 189437 × 134975101 × 516094151 × 207612155793974069<18> × 372515213872960388437<21> × 4555268603071594349347155493<28> × 2314972224352630562981533078843973<34> × [27319374099183348406888938089570220656267011379016453296554748008910840216817210324277140603237973147294151344529624217566652883703829467363970777307310659492699180973392087414282337817230488811496160231465948033834446640546776003666480703428497803586478729302226177973098840202871437926731981648846103958954571771863319501232229467744761019680389288759305723300450955751935921742872853167694278541295290688690986834751876416126506817810560385720734276283220401840738850101962420512739248034255845087214795946150689386483978601102450569239182953492818230523458174388000709985850960169596801684780521211071263804159716807030176256875886634015127010998886955532850652972091313206271374737889246167763390156355263140325625344338724120109450713207920528108838449258110526707108130949<779>]

Index range: 689 – 689 << prev next >>