tables > repunit > 21

Base 21 Repunits

Table

Viewing: 407 – 407 << prev next >>

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

* 407: \[{21^{407}-1\over20}\] 31081 × 1681762703 × 17513875027111<14> × 18117728991023876218027<23> × 7995105693353508392600118377453099<34> × [5243883637165829595576066973480183873142933804654208949898792027177682342361899172187130711819778197821423525937737487632228171401935975639613402881572153089148007402907677372640255001552944844274526995779245553010749643550621178144804875421355686535177821076411729857812657166254263396464179553509302848027178955366570535075153702126393966549337768295556484304894923835472377691540497132160791951246825537526116284584904387513142901311174011255502407763<454>]

Index range: 407 – 407 << prev next >>