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	15680r	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	1.4570296456459	L(r)(E,1)/r!
Ω	1.4570296456459	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	15680w2 7840y1 78400cz2 320e2	Quadratic twists by: -4 8 5 -7

Hecke Eigenvalues for elliptic curve 15680r2

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 15680r2

-4	8	5	-7
15680w2	7840y1	78400cz2	320e2

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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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