n!!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 264: | \[264!!!!!-1\] | 1747 × 17197640742253925903743<23> × 612385029538984721553180652448093946237460365664254187903660578788569084672519643<81> |