n!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
186: | \[186!!!!+1\] | 271 × 745367713 × 11756345978946839<17> × 44252007139829693<17> × 4000949423053062602838524478743294956845181<43> |