n!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 276: | \[276!!!!+1\] | 12396821 × 1278493185889381104225101327857521380121561768461<49> × 3762163357874911866824712207733418171561959109255657948141351995694550195719715655921<85> |