tables > repunit > 21

Base 21 Repunits

Table

Viewing: 281 – 281 << prev next >>

(available: 0-999)

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

* 281: \[{21^{281}-1\over20}\] 563 × 927120556211<12> × 1150975039764404997572049811<28> × [29099217709481048607109155872037640485817149268004029679476417787303763460517782280236066343245472879704182498154777915582258217471636809477170617656276319046467091063740926529877040762992350988708829121648031339193412671160705994277784475303224163713785937295496789674441447859679027863555354060417179509463875064385523710705147<329>]

Index range: 281 – 281 << prev next >>