tables > repunit > 20

Base 20 Repunits

Table

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

* 411: \[{20^{411}-1\over19}\] 421 × 1139265971 × 135494533558107290929<21> × 519124739914239138234099991<27> × 1550454239729214125594858269650609108408627458001480597404916790220082810453152846327131756809045902891421380387919201304423524421879627196561<142> × [5321265667270466029288815314444623303963187626976751294190410239094320290649600124141824880627621480694032609409953142009346497748786795853307410730722927914415833710050673415660918123242889390475325192414240355813364191792498839666156256970731033883069267631348618835494203733799558062397137063967249748899876191341164352922175545789<334>]

Index range: 411 – 411 << prev next >>