tables > factorial > f2+1

n!! + 1

Table

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

* 281: \[281!!+1\] 2 × [125591136247501343295411991766815933131675456861291485910787529576051371940120085302655461296313803201063775522994599547888026568528215563535090595499108464847993313935392803328566661244336724523995610750048656859726280468592817855307527063182725189134719872807909268885850906372070313<285>]

Index range: 281 – 281 << prev next >>