n! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
90: | \[90!+1\] | 1381173038633<13> × 42025070023047325132446149666132026718715669472074383<53> × 25596421444788555447555320241499448369527283715169223676054601753562783959<74> |