Cremona's table of elliptic curves

20384 = 2⁵ · 7² · 13

Field	Data	Notes
Atkin-Lehner	2+ 7- 13-	Signs for the Atkin-Lehner involutions
Class	20384s	Isogeny class
Conductor	20384	Conductor
∏ cp	4	Product of Tamagawa factors cp
deg	20480	Modular degree for the optimal curve
Δ	-18264064 = -1 · 212 · 73 · 13	Discriminant
Eigenvalues	2+ -2  3 7-  2 13- -4 -5	Hecke eigenvalues for primes up to 20
Equation	[0,1,0,-10509,-418181]	[a1,a2,a3,a4,a6]
Generators	[765:20972:1]	Generators of the group modulo torsion
j	-91368216064/13	j-invariant
L	4.4343505562875	L(r)(E,1)/r!
Ω	0.23576306210531	Real period
R	4.7021260632284	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	20384q1 40768cx1 20384h1	Quadratic twists by: -4 8 -7

Hecke Eigenvalues for elliptic curve 20384s1

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	-	2	-	-4	-5	3	3	7	-4	-10	-1	-3	-13	12	-4	2	16	-7	-1	-11	-3	13

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Quadratic twists for elliptic curve 20384s1

-4	8	-7
20384q1	40768cx1	20384h1

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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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