n!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
* 271: | \[271!!!!+1\] | 2 × 3354434957346887<16> × [9138583971973824895955742238261888877393543304771453634773530130494341933717783464049130328050332306210134241481604118099<121>] |