tables > factorial > f2+1

n!! + 1

Table

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

* 311: \[311!!+1\] 2 × 6553 × 210487 × 40888759516771<14> × 387911681673377905925929<24> × [70395395833411637721271269438041114521835927264602570066877444586671723186685989837973204977091896929879736647702272365254820783568086407183440183311004217735981815451094432086783693182822569887433447231517065816905535591694668028524027167472723378909729536673976833547050537<275>]

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