n!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
287: | \[287!!!!-1\] | 24 × 293 × 9454491098858591<16> × 2332317601851964271<19> × 3695898680387789219041235119175255362281377403097608525249106223092572712239960501466817213208011181602004493<109> |