tables > repunit > 21

Base 21 Repunits

Table

Viewing: 397 – 397 << prev next >>

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

* 397: \[{21^{397}-1\over20}\] 6117686733710256760961<22> × [6814637821150192236702958705639752137334260811232156348143655122007268568740498292621700650130559949787004174861595784158711033175425956393909575310551644675392508396136451210262286369536238845064656969476215819061213464115537236400576938436290630814896675914605278253039689791565776923646577903578329181909311098731744628308528763927514883224341311538586551780297237925405894682630970236549215169941096072613631230394986112915148913128295768775709546409459208053011734891131221647851300552768979027397<502>]

Index range: 397 – 397 << prev next >>