tables > repunit > 21

Base 21 Repunits

Table

Viewing: 77 – 77 << prev next >>

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

77: \[{21^{77}-1\over20}\] 43 × 631 × 3319 × 6225803431<10> × 17513875027111<14> × 39824892937303186001525100993399811<35> × 82721492925050166710438512180782661<35>

Index range: 77 – 77 << prev next >>