tables > repunit > 20

Base 20 Repunits

Table

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

239: \[{20^{239}-1\over19}\] 479 × 59317889 × 717244238895883080079<21> × 228153478089853114243045558480328267636509371621303655721429281952190077165550661828568648679880023586683054928040434063302456511451360705026893376879611904173670115828049244029478938123995289955289781198499059515369274067974817650913174371254667372227570559230751550185413953429<279>

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