the proof notes, §7, Lemma 7: crude all-prime coefficient valuation bound.
Qtilde r n = det (binomGram r n) (Small/Gram), every entry has Gauss valuation
≥ -3⌊log_p(10n+2)⌋ - v_p(den r) (Small/Entry), and the determinant of a 3n × 3n matrix loses
at most
3n times the entry bound (det_GV). Here D = 2h + sn + 2 = 10n + 2.