n!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 164: | \[164!!-1\] | 163 × 17077 × 8175025169573<13> × [101017811830314638844727580617748446222544189754538375744419696703270188180449969399122066284897522564052439716523268033359119213<129>] |