tables > repunit > 21

Base 21 Repunits

Table

Viewing: 13 – 13 << prev next >>

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

13: \[{21^{13}-1\over20}\] 79 × 189437 × 516094151

Index range: 13 – 13 << prev next >>