tables > repunit > 20

Base 20 Repunits

Table

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

34: \[{20^{34}-1\over19}\] 3 × 7 × 2567783 × 2640509 × 92054423 × 689852631578947368421<21>

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