n!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 199: | \[199!!+1\] | 2 × 1453 × 2154643 × 2849927 × 457249298923071943<18> × [817010620571366836522504324358688042395384918366492672194223979297277532918970275264305115114076040988767950667291135407966632570594945423349100885621027<153>] |