n!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 254: | \[254!!!-1\] | 199961 × 49391841074089<14> × 1037489910802500866653324401074538740638211<43> × 72227875507619331268221977459524667144105917<44> × 2293278749203119939675636839969227072884825503058205359341592313<64> |