IF YOU CAN SEE THIS go to http://www.cs.cornell.edu/Info/People/sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
prime factorization exists21 1. n : {1...}
2. h:({2..(n+1)}). n = {2..n+1}(h) & is_prime_factorization(2; (n+1); h)
f:(Prime). f is a factorization of n