Cremona's table of elliptic curves

15680 = 2⁶ · 5 · 7²

Field	Data	Notes
Atkin-Lehner	2+ 5+ 7+	Signs for the Atkin-Lehner involutions
Class	15680c	Isogeny class
Conductor	15680	Conductor
∏ cp	12	Product of Tamagawa factors cp
deg	18816	Modular degree for the optimal curve
Δ	-944504995840 = -1 · 215 · 5 · 78	Discriminant
Eigenvalues	2+ -2 5+ 7+ -3  1 -2  1	Hecke eigenvalues for primes up to 20
Equation	[0,1,0,-3201,82879]	[a1,a2,a3,a4,a6]
Generators	[-33:392:1]	Generators of the group modulo torsion
j	-19208/5	j-invariant
L	2.6042235354312	L(r)(E,1)/r!
Ω	0.8392497457479	Real period
R	0.25858646851207	Regulator
r	1	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	1	Number of elements in the torsion subgroup
Twists	15680a1 7840g1 78400h1 15680bt1	Quadratic twists by: -4 8 5 -7

Hecke Eigenvalues for elliptic curve 15680c1

a2	a3	a5	a7	a11	a13	a17	a19	a23	a29	a31	a37	a41	a43	a47	a53	a59	a61	a67	a71	a73	a79	a83	a89	a97
+	-2	+	+	-3	1	-2	1	1	2	-4	-9	3	2	9	-9	0	-12	-8	16	4	6	4	6	18

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Quadratic twists for elliptic curve 15680c1

-4	8	5	-7
15680a1	7840g1	78400h1	15680bt1

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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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