tables > repunit > 21

Base 21 Repunits

Table

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

301: \[{21^{301}-1\over20}\] 432 × 631 × 3319 × 3613 × 35842614220783025524408588074144786493150233831596714503<56> × 9699214344282554468171662045776472091017152517801007915911936489981414597066618208346490491024523379649346501972806540602780485394443699297551535059961141074561553734445183308183183710882754039876213370975979075672566804219497104668066380772842335199783682922918880192565045378023548212174247192946376670185947578568158676384919<328>

Index range: 301 – 301 << prev next >>