Cremona's table of elliptic curves

18928 = 2⁴ · 7 · 13²

Field	Data	Notes
Atkin-Lehner	2+ 7- 13+	Signs for the Atkin-Lehner involutions
Class	18928f	Isogeny class
Conductor	18928	Conductor
∏ cp	4	Product of Tamagawa factors cp
deg	3840	Modular degree for the optimal curve
Δ	-8479744 = -1 · 210 · 72 · 132	Discriminant
Eigenvalues	2+ -2 -1 7-  2 13+ -3 -8	Hecke eigenvalues for primes up to 20
Equation	[0,1,0,-56,196]	[a1,a2,a3,a4,a6]
Generators	[-8:14:1] [0:14:1]	Generators of the group modulo torsion
j	-114244/49	j-invariant
L	5.3857783285569	L(r)(E,1)/r!
Ω	2.1762226436059	Real period
R	0.6187071833368	Regulator
r	2	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	1	Number of elements in the torsion subgroup
Twists	9464a1 75712cv1 18928c1	Quadratic twists by: -4 8 13

Hecke Eigenvalues for elliptic curve 18928f1

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	-1	-	2	+	-3	-8	-6	-9	-6	-3	3	2	-12	-5	-14	-11	-2	12	-9	10	6	-10	-10

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Quadratic twists for elliptic curve 18928f1

-4	8	13
9464a1	75712cv1	18928c1

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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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