n!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 166: | \[166!!+1\] | 991 × 132809777999906719088970966613<30> × 2899283079836905405240231720410166290885370214186939222946723125958081235145967904780028679268003003956322063045546147<118> |