n!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 265: | \[265!!-1\] | 24 × 367 × 659 × 76511 × 5082479589203<13> × [5260167055426441845282890921434993170182716357752729229860331793630029525828949946971123305889499350109529302955221644843604708710710970696171620667282846327842225465686603934150066814726071177149379339382739776431191575231382479210588688211<241>] |