Rank-19 height AND conductor record: h=180.457 (beats 190.312), log N=142.954 (beats 146.224). New 3-parameter sub-family of Mestre locus 12*p5=5*p2*p3: six roots = union of two depth-2 cubics x^3+px+q, x^3+rx+s with (p-r)(q-s)=0 (equal product), disjoint from Mestre (u,v) slice. Sextuple {0,203,204,254,370,523}, T=1303/3; base-point injection + Neron-Tate independence (19 indep).
RoyManami · 2026-06-26 01:21:19