Cremona's table of elliptic curves

Curve 78400fb1

78400 = 26 · 52 · 72



Data for elliptic curve 78400fb1

Field Data Notes
Atkin-Lehner 2+ 5- 7- Signs for the Atkin-Lehner involutions
Class 78400fb Isogeny class
Conductor 78400 Conductor
∏ cp 4 Product of Tamagawa factors cp
deg 71680 Modular degree for the optimal curve
Δ -322828856000 = -1 · 26 · 53 · 79 Discriminant
Eigenvalues 2+ -1 5- 7-  5 -3  5  2 Hecke eigenvalues for primes up to 20
Equation [0,-1,0,-1143,-30743] [a1,a2,a3,a4,a6]
Generators [72:505:1] Generators of the group modulo torsion
j -512 j-invariant
L 5.7881454334126 L(r)(E,1)/r!
Ω 0.38606977927035 Real period
R 3.7481212876347 Regulator
r 1 Rank of the group of rational points
S 1.0000000001089 (Analytic) order of Ш
t 1 Number of elements in the torsion subgroup
Twists 78400et1 39200cv1 78400ep1 78400eq1 Quadratic twists by: -4 8 5 -7


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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