Cremona's table of elliptic curves

21584 = 2⁴ · 19 · 71

Field	Data	Notes
Atkin-Lehner	2+ 19+ 71+	Signs for the Atkin-Lehner involutions
Class	21584a	Isogeny class
Conductor	21584	Conductor
∏ cp	4	Product of Tamagawa factors cp
deg	2880	Modular degree for the optimal curve
Δ	-2762752 = -1 · 211 · 19 · 71	Discriminant
Eigenvalues	2+  2  0  1  0  4 -4 19+	Hecke eigenvalues for primes up to 20
Equation	[0,-1,0,-128,608]	[a1,a2,a3,a4,a6]
Generators	[4:12:1]	Generators of the group modulo torsion
j	-114133250/1349	j-invariant
L	7.8619643387822	L(r)(E,1)/r!
Ω	2.5615132691253	Real period
R	0.76731637832458	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	10792a1 86336o1	Quadratic twists by: -4 8

Hecke Eigenvalues for elliptic curve 21584a1

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	0	1	0	4	-4	+	3	-5	6	3	2	-3	-4	-10	-9	6	-4	+	-11	-7	-9	16	1

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Quadratic twists for elliptic curve 21584a1

-4	8
10792a1	86336o1

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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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