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	15680w	Isogeny class
Conductor	15680	Conductor
∏ cp	4	Product of Tamagawa factors cp
Δ	2409451520 = 212 · 5 · 76	Discriminant
Eigenvalues	2+ -2 5+ 7-  4 -6 -2  8	Hecke eigenvalues for primes up to 20
Equation	[0,1,0,-1241,-17081]	[a1,a2,a3,a4,a6]
j	438976/5	j-invariant
L	0.80487124932633	L(r)(E,1)/r!
Ω	0.80487124932633	Real period
R	1	Regulator
r	0	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	2	Number of elements in the torsion subgroup
Twists	15680r2 7840n1 78400cl2 320d2	Quadratic twists by: -4 8 5 -7

Hecke Eigenvalues for elliptic curve 15680w2

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	+	-	4	-6	-2	8	-6	2	-4	-2	10	2	2	-2	0	2	6	-12	-10	-8	-10	6	-10

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Quadratic twists for elliptic curve 15680w2

-4	8	5	-7
15680r2	7840n1	78400cl2	320d2

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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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