Cremona's table of elliptic curves

1988 = 2² · 7 · 71

Field	Data	Notes
Atkin-Lehner	2- 7+ 71-	Signs for the Atkin-Lehner involutions
Class	1988a	Isogeny class
Conductor	1988	Conductor
∏ cp	3	Product of Tamagawa factors cp
deg	144	Modular degree for the optimal curve
Δ	-127232 = -1 · 28 · 7 · 71	Discriminant
Eigenvalues	2-  1  2 7+ -5 -3  2  0	Hecke eigenvalues for primes up to 20
Equation	[0,1,0,-12,-28]	[a1,a2,a3,a4,a6]
Generators	[4:2:1]	Generators of the group modulo torsion
j	-810448/497	j-invariant
L	3.5469719748956	L(r)(E,1)/r!
Ω	1.2392087203029	Real period
R	0.95409592610265	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	7952g1 31808d1 17892d1 49700i1	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 1988a1

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	2	+	-5	-3	2	0	-3	-5	6	-11	-3	2	10	-6	-4	-7	-12	-	2	4	15	8	13

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Quadratic twists for elliptic curve 1988a1

-4	8	-3	5	-7
7952g1	31808d1	17892d1	49700i1	13916i1

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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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