tables > repunit > 21

Base 21 Repunits

Table

Viewing: 447 – 447 << prev next >>

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

* 447: \[{21^{447}-1\over20}\] 463 × 1193 × 1789 × 4149000929822858713<19> × 19200704422015926819331744380572154435059819<44> × 53919242439762773005242386860200557456243874686294562852445931950590020366014258150390180061554764542320310512176525567625295129239<131> × [12681145896209122264956212700258011577199027620024405905473916204963488115750445305271377772389120725388471134153038010753041977786270370284746692147939762626336546706442786272183812572801727487095729168117676339134375126905545813584112799887167246621609898198756402046663462586636030486442332629668579412112477628933127192730208647856996697050128720835286869803205694264122031438211500549<389>]

Index range: 447 – 447 << prev next >>