Ulrich H Kurzweg factorization papers list (to eliminate confusion) (they are all describing different algorithms and approaches):
November 1, 2012 - (Factorizing-Semiprimes-with-the-Integer-Spiral.pdf)
August 2013 - the search for 2(x+n)^2 or 2(d+n)^2 paper (A-New-Method-for-Factoring-Large-Semiprimes.pdf)
Christmas (December?) 2013 - the search for 2(d+n) [N(f(N)] paper (A-Quick-Way-to-Factor-Large-Semiprimes.pdf)
January 2015 - d, e and f paper, (A-New-Approach-to-Factoring-Semiprimes.pdf) (hereby renamed the zeta search paper since it is a search for the value of a variable I've renamed to zeta ζ for our purposes)
August 2015 - Factorizing with Q primes (Factoring-Large-Semiprimes.pdf)
April 7, 2016 - (UNIVERSAL-CURVE.pdf)
Who knows where he's gotten by now.