n!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 268: | \[268!!!!+1\] | 15076879 × [52681358034282090829494554485350872857753757925036857262405702984825600094048170567643999449737017756823335299988906752385556719<128>] |