n!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 151: | \[151!!!!+1\] | 2 × 9421 × 34057 × 17773286981<11> × 1136057271569616563306746148572304752861841275159<49> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 151: | \[151!!!!+1\] | 2 × 9421 × 34057 × 17773286981<11> × 1136057271569616563306746148572304752861841275159<49> |