n!!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 221: | \[221!!!!!+1\] | 461 × 26573 × 76771 × 37401329645730091041633525426963451587077988216448131711537459954627898579<74> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 221: | \[221!!!!!+1\] | 461 × 26573 × 76771 × 37401329645730091041633525426963451587077988216448131711537459954627898579<74> |