tables > repunit > 20

Base 20 Repunits

Table

Viewing: 509 – 509 << prev next >>

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

* 509: \[{20^{509}-1\over19}\] 1019 × 12000892529<11> × 6293941018681<13> × [114605059954688387182081118043807659287913233904043454030365669121584314482802300690557702095318601137655850178693749712586881756887816271140377466078011876906971983707206535832284907287580466809635306426330695506488368648259353030113232895517205015437834196450147302496705641362250724481250274662209462436130535099720789828292415505803984141659067688540548615884900120950065012569570949061600866895346741215524284509132529562926034311764135730206904687527878392464326658044824144947089090317072568506533724922027512991530093715262621072690638674621400050946998162676594686510925716853388572866442933370964218212842234510999560280985991<636>]

Index range: 509 – 509 << prev next >>