Exact computational search in the full 2-torsion/3-torsion family with p=-21, q=10; A=(3q-p)(p+q)^3=-67881, B=-(p+3q)(p-q)^3=268119. The listed points are independent modulo torsion by the exact 2-descent Kummer squareclass map. The rank is a proven lower bound; no upper bound is claimed.
Natanael Wildner Fraga ·