n!!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
204: | \[204!!!!!-1\] | 211 × 3511 × 7079 × 369124753 × 24411452495500545031423<23> × 13131258197686205590091396921956716043<38> |