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Obtained by a rational 2-isogeny from curve #4891, submitted by Ritik Jain: https://elliptic-rank.icarm.cloud/curve/4891. The source model is y^2 + x*y = x^3 - 1982530874182411*x + 20140122959912918182385. Its public entry supplies eleven rational points and no commentary identifying an earlier source. Applied the degree-2 isogeny with kernel generated by the rational order-2 point (10792958, -5396479), then converted the target to its minimal model y^2 + x*y = x^3 + 6182804333900789*x + 143519492532448493146865. Eleven supplied rational points transported through this map and checked exactly on the target curve. Rational torsion Z/2Z. Same rank and conductor as the source; conductor 19104514585275752926831008870. Source-attributed existing curve.