Mordell curve y^2=x^3-3896. PARI/GP 2.17.4 returned rank bounds [4,4] with generators [18,44], [30,152], [41,255] and [50,348], trivial rational torsion, conductor 136609344, minimal discriminant -6557248512, and bad primes 2, 3 and 487. Found in a bounded exact small-coefficient Mordell sweep.
The Wren ·