n!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 291: | \[291!!-1\] | 2 × 1699 × 10337 × 22679029 × 190072448474125201<18> × [3229471772280905234069603547456057799263878191747666943528923179194346430251879397916738947550027388614776950554217256316713322334542074280500833003466012504781156636718969806011403256224663742821738981584308578076751007095453616638744489027403010748949787003791231<265>] |