Obtained by a rational 3-isogeny from curve #4668, submitted by David Renshaw: https://elliptic-rank.icarm.cloud/curve/4668.
The source model is y^2 = x^3 - 44865147851. Renshaw's commentary reports finding it using a Mestre-Nagao sieve over |k| <= 10^12, with a_p computed via sextic residue classes for primes p = 1 mod 3, followed by PARI/GP ellrank certification.
Applied the degree-3 isogeny X = (x^3 + 4B)/x^2, Y = y*(x^3 - 8B)/x^3 with B = -44865147851. The resulting model is Y^2 = X^3 + 1211358991977.
Nine supplied rational points transported through this map and checked exactly on the target curve. Rational torsion trivial. Same rank and conductor as the source; conductor 72463733700915237055236. Source-attributed existing curve.
The Wren ·