tables > repunit > 20

Base 20 Repunits

Table

Viewing: 687 – 687 << prev next >>

(available: 0-999)

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

* 687: \[{20^{687}-1\over19}\] 421 × 9619 × 20611 × 50839 × 15769399 × 27198331 × 42277981 × 31866034873488139<17> × [454062259657273933383865517255067463977046642905946483892271330513111578947368421052631578947368421052631578947368421052631578947368421052631578947368421052631578947368421052631578947368421052631578947368421052631578947368421052631578947368421052631578947368421052631578947368421052631578947368421<297>] × 30355002138470892503002260931886184859459289402587719753001964620606620017519380636186774776034807120891885517205430603028226063928230230816056642581225417243602926698424572140892300236056804364027533793855111419948819798066873709141849516807360701064050159301839620503220097340989002786473835720557558439079025504824448406802439176778833062071165996316856413168215851211825955176238745592032039403577140321425558068912981120185377894106400534488674159494529170322956051807998780168398788360838767509048327452415518175353617302247817053176161<542>

Index range: 687 – 687 << prev next >>