n!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 242: | \[242!!-1\] | 2767 × 11197 × 13597 × 282175295587<12> × 416445743321<12> × 43468769050159242880667650607455928493439910289171678482017871571225364746334065530902808070151813154601183747023334025349449064656638414240683342934836117356799035478422232565073002352038019399794187579<203> |