n!!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
347: | \[347!!!!!-1\] | 295276281101585016683<21> × 12085936814201628566333823449173662073643851995373566357458070995027165228670028684329350814753511974447660131958647736650363581<128> |