n!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
147: | \[147!!+1\] | 22 × 7681 × 180679 × 613661 × 4229455894560029440503154775284892159763283560077<49> × 28395353855476221842131995898468534470351140089921128314070023923<65> |