n!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
193: | \[193!!!!+1\] | 2 × 8069 × 55514737 × 49442581637<11> × 29021898171814281101<20> × 10702303639618682322227<23> × 208267625646056332075003679<27> |