n!!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
287: | \[287!!!!!+1\] | 53 × 301591 × 11727713 × 140985083 × 1552631296817<13> × 7681489340551360337<19> × 82111234593563318548134918359<29> × 52583801785603145195857086974728351<35> |