n!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 492: | \[492!!-1\] | 491 × 1153 × 11633 × 456991 × 2675441 × 310321633 × 6834136913<10> × 396472902937<12> × 53837858623793<14> × 317240401299710241721<21> × [829060607188478625832106380257173126915924101868846515597526002528776416391911270314065053289843229901532759271813627225156625682344430946510798562820680193903601796251058044195011557679028567391983824211057112790488030585153823088743447036114140726134365999233986405759935389601250310693473016655235640673775603906093745452122363447627070421769058688408791868393249088053471581732605605262264123160879673701941935607393638251834318544917284348395630047196222579690261299<471>] |