n!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 213: | \[213!!-1\] | 2 × 227 × 101599 × 30875735520599<14> × [76128534095475201940234069387395676667863155567920572625689604351781892799201041099256372054237073226126834164153933760992007303366199108414121714809656784805727272547434655278600181<182>] |