n!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
* 276: | \[276!!!!-1\] | 139 × [428974618856526227849563055504952271569093630294767048407741819620676660226290158233113400438169151119645166441202177394879539568345323741<138>] |