n!!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 420: | \[420!!!!!+1\] | 1013 × 262336358663<12> × 38347009888381<14> × [16813762150758050148793606500381330022312856126175510837849494151278891959549609168011926073622932586224173181069138352246975000847210911594300057404037737559<158>] |