n!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
* 303: | \[303!!!!+1\] | 2 × 3798642541 × 39820231022423<14> × [9822004535710593505957202987578821781440624138794181690266139570264964918456375900884193794802116600237504879037706255155813781510791<133>] |