n!!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 351: | \[351!!!!!+1\] | 115209225629<12> × 5018098823308546048042301496721938704870009294133021119<55> × 447834972114090329198055217419407752862265754858824520469997918743400110995683353227<84> |