n!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 277: | \[277!!+1\] | 24 × 99023 × 32597990930386603<17> × 2493383600814050543<19> × 1127380708266340820581<22> × 22068451854127150124332248158262819369526076724149613980715007720246003819228587035541136040935872652265191810693540680420595162300786796713454112607842576794006409362457254312582223805829649335852049559386945463477393<218> |