n!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 512: | \[512!!!!-1\] | 696737 × 724991 × 7273062195557955679<19> × [12154026881345164074202957760181848511256855742436624613082738535735844513152601717377010778359072816019717477491451292625213444329406320520161774204734406260667198126569217923074047033977901031746778239854437526164944810322387768556471144605395281319390915226943<263>] |