n!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 218: | \[218!!+1\] | 191 × 7541 × 178681 × 158993473 × 8485729314841<13> × [269889093431050828839213802663119850351859182536849451714608153541306031819657037403865941356881777803222527224146233799555916033572177870104875118542721831949176861299640919987<177>] |