Cremona's table of elliptic curves

9920 = 2⁶ · 5 · 31

Field	Data	Notes
Atkin-Lehner	2+ 5+ 31+	Signs for the Atkin-Lehner involutions
Class	9920a	Isogeny class
Conductor	9920	Conductor
∏ cp	4	Product of Tamagawa factors cp
deg	5760	Modular degree for the optimal curve
Δ	3075200000 = 210 · 55 · 312	Discriminant
Eigenvalues	2+  0 5+ -2  4  4  0  0	Hecke eigenvalues for primes up to 20
Equation	[0,0,0,-4208,105032]	[a1,a2,a3,a4,a6]
Generators	[22:152:1]	Generators of the group modulo torsion
j	8047314026496/3003125	j-invariant
L	3.8805564994474	L(r)(E,1)/r!
Ω	1.3963655539757	Real period
R	2.7790405516657	Regulator
r	1	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	2	Number of elements in the torsion subgroup
Twists	9920t1 620b1 89280cg1 49600c1	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 9920a1

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
+	0	+	-2	4	4	0	0	-4	-2	+	-8	6	8	-6	8	-4	-2	2	0	-4	0	8	6	-2

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Quadratic twists for elliptic curve 9920a1

-4	8	-3	5
9920t1	620b1	89280cg1	49600c1

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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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