n!!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 309: | \[309!!!!!-1\] | 5 × 2438768101105752681868948408917807652807<40> × 21029049491478686482353877117721723392077230710652077006857321942380566318008760348322101<89> |