tables > repunit > 21

Base 21 Repunits

Table

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

* 241: \[{21^{241}-1\over20}\] 8677 × 68927 × 30803026746692878739710027<26> × [12259356325766816996952809809627672101171408849175134541110980640902041897741830084280910606824186769415016071065625284735372572992878212497052317837119348866498857846492437847542424121192939815349003819685515393356374773901158232463458092197660969930566004569097672396068314550886377<284>]

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