Cremona's table of elliptic curves

Curve 1885b1

1885 = 5 · 13 · 29



Data for elliptic curve 1885b1

Field Data Notes
Atkin-Lehner 5+ 13+ 29+ Signs for the Atkin-Lehner involutions
Class 1885b Isogeny class
Conductor 1885 Conductor
∏ cp 2 Product of Tamagawa factors cp
deg 1920 Modular degree for the optimal curve
Δ 1366625 = 53 · 13 · 292 Discriminant
Eigenvalues -1  2 5+  0  2 13+ -6  2 Hecke eigenvalues for primes up to 20
Equation [1,1,1,-28471,1837204] [a1,a2,a3,a4,a6]
Generators [88:107:1] Generators of the group modulo torsion
j 2552306517708204529/1366625 j-invariant
L 2.504198624561 L(r)(E,1)/r!
Ω 1.6528163629634 Real period
R 3.0302200300959 Regulator
r 1 Rank of the group of rational points
S 1 (Analytic) order of Ш
t 2 Number of elements in the torsion subgroup
Twists 30160q1 120640bq1 16965o1 9425e1 Quadratic twists by: -4 8 -3 5


Data from Elliptic Curve Data by J. E. Cremona.
Design inspired by The Modular Forms Explorer by William Stein.

Part of Computational Number Theory
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