I want to find out the Cremona label of the elliptic curve given by $$y^2 = x^3 - x^2 - 1008x + 48512.$$ I have tried the following commands in Sage but getting errors.
1) E=EllipticCurve(QQ,[0, -1, 0, -1008, 48512]);E.cremona_label()
2) d=CremonaDatabase().data_from_coefficients([0, -1, 0, -1008, 48512]) d['cremona_label']
I would like to know why I am getting errors and also how to find out the Cremona label of the above elliptic curve.
