n!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
266: | \[266!!!-1\] | 5567053519<10> × 32303290012913<14> × 980631344005403<15> × 13377580930130285760694249<26> × 3363058565009411659040454742893077165611202661689850250561738035859054110959976050150192500552656571620151368542011<115> |