Cremona's table of elliptic curves

20280 = 2³ · 3 · 5 · 13²

Field	Data	Notes
Atkin-Lehner	2+ 3+ 5+ 13+	Signs for the Atkin-Lehner involutions
Class	20280c	Isogeny class
Conductor	20280	Conductor
∏ cp	8	Product of Tamagawa factors cp
deg	239616	Modular degree for the optimal curve
Δ	-595548684787680000 = -1 · 28 · 33 · 54 · 1310	Discriminant
Eigenvalues	2+ 3+ 5+  3 -2 13+ -4  4	Hecke eigenvalues for primes up to 20
Equation	[0,-1,0,-38081,-37226619]	[a1,a2,a3,a4,a6]
Generators	[621:13350:1]	Generators of the group modulo torsion
j	-173056/16875	j-invariant
L	4.3873117398984	L(r)(E,1)/r!
Ω	0.12829935506034	Real period
R	4.2744873287116	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	40560s1 60840bv1 101400dg1 20280u1	Quadratic twists by: -4 -3 5 13

Hecke Eigenvalues for elliptic curve 20280c1

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
+	+	+	3	-2	+	-4	4	2	6	1	6	-8	-3	-10	-8	-6	-5	3	-10	11	17	0	0	7

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Quadratic twists for elliptic curve 20280c1

-4	-3	5	13
40560s1	60840bv1	101400dg1	20280u1

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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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