tables > repunit > 21

Base 21 Repunits

Table

Viewing: 68 – 68 << prev next >>

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

68: \[{21^{68}-1\over20}\] 22 × 11 × 13 × 172 × 11969 × 300293033 × 114089969144083169<18> × 1502097124754084594737<22> × 399981195234791390040813065378761<33>

Index range: 68 – 68 << prev next >>