n!!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 151: | \[151!!!!!+1\] | 72767876470150024491211883<26> × 7329021485876348638399639619<28> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 151: | \[151!!!!!+1\] | 72767876470150024491211883<26> × 7329021485876348638399639619<28> |