n!!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 260: | \[260!!!!!-1\] | 25463 × 7033622369636807567754656867403722327773633971216354367120920551388288889761614892196520441424812473<100> |