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	15680a	Isogeny class
Conductor	15680	Conductor
∏ cp	4	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	[2163:11080:27]	Generators of the group modulo torsion
j	-19208/5	j-invariant
L	6.7279451802116	L(r)(E,1)/r!
Ω	0.31308075279528	Real period
R	5.3723720798408	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	15680c1 7840v1 78400l1 15680bw1	Quadratic twists by: -4 8 5 -7

Hecke Eigenvalues for elliptic curve 15680a1

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 15680a1

-4	8	5	-7
15680c1	7840v1	78400l1	15680bw1

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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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