n!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
187: | \[187!!!!+1\] | 25 × 16940099243<11> × 117322643177<12> × 831335408824928795609<21> × 30136312204815958953725655690686383517245357<44> |