tables > repunit > 21

Base 21 Repunits

Table

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

* 267: \[{21^{267}-1\over20}\] 463 × 3739 × 138348511207<12> × 1719937817227174896868741057213630597485253956382680484361683645714455944660556942937263903929864448451087<106> × [13082718790933894712348223215615687416597957858748143791974444028016677265268117344033424519147132590503582751725804794360640898074638009088578747432882657873225348139310566781198596990146586328066126088886720135688508200272941299<230>]

Index range: 267 – 267 << prev next >>