tables > repunit > 20

Base 20 Repunits

Table

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

* 211: \[{20^{211}-1\over19}\] 2111 × [820516371548134354960217997236206589534885370183041144555391071330624049465207310080031913036974245181879378693061407664115285846069460719539255528684335186616470118925926849335560597372160861651998304619910743224712658006931112717843875439427559899274477050038644693211<270>]

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