n! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
78: | \[78!-1\] | 521 × 224717 × 3987488293 × 24257026997504207090917691633573378361864004661628048711521749200966252220705353301450395302500199<98> |