tables > repunit > 21

Base 21 Repunits

Table

Viewing: 87 – 87 << prev next >>

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

87: \[{21^{87}-1\over20}\] 59 × 463 × 1103704099 × 246763300513<12> × 687613372491653<15> × 7826081384442721874824416529<28> × 13477015991023291802765110016390772920553907009<47>

Index range: 87 – 87 << prev next >>