n!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 227: | \[227!!-1\] | 2 × 541 × 89603240107<11> × 55894330405853<14> × 189769703294033<15> × 28455478454112197<17> × [95289792777114336849137719319483078011033688561434749516553298835766828621195523652771878783873573958690039962544732937411158822491335438733140212144810206867567<161>] |