Cremona's table of elliptic curves

20720 = 2⁴ · 5 · 7 · 37

Field	Data	Notes
Atkin-Lehner	2- 5+ 7- 37+	Signs for the Atkin-Lehner involutions
Class	20720j	Isogeny class
Conductor	20720	Conductor
∏ cp	20	Product of Tamagawa factors cp
deg	34560	Modular degree for the optimal curve
Δ	-736281056000 = -1 · 28 · 53 · 75 · 372	Discriminant
Eigenvalues	2- -1 5+ 7-  1  5  3  8	Hecke eigenvalues for primes up to 20
Equation	[0,-1,0,-10221,-396479]	[a1,a2,a3,a4,a6]
Generators	[253:3626:1]	Generators of the group modulo torsion
j	-461324374319104/2876097875	j-invariant
L	4.3021657604229	L(r)(E,1)/r!
Ω	0.23731809503002	Real period
R	0.90641334363458	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	5180a1 82880bt1 103600bi1	Quadratic twists by: -4 8 5

Hecke Eigenvalues for elliptic curve 20720j1

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
-	-1	+	-	1	5	3	8	-4	-7	-8	+	0	-12	7	6	-2	-4	-10	8	6	1	-16	8	3

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Quadratic twists for elliptic curve 20720j1

-4	8	5
5180a1	82880bt1	103600bi1

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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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