tables > repunit > 20

Base 20 Repunits

Table

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

* 301: \[{20^{301}-1\over19}\] 29 × 71 × 32719 × 369122321 × 12541974245083294274833711773684280721275134101<47> × [6875155303836864184397077378951061231093421926314144369853880805890943738975860832246365424179152941257558278867414927000665100693537450295117633119011457860357109453414093893247726214733855038918954867933033490572682414510022984288818846247236810350653758086448248505037694144562004220497049797263320154111968870399975679999981<328>]

Index range: 301 – 301 << prev next >>