Cremona's table of elliptic curves

1984 = 2⁶ · 31

Field	Data	Notes
Atkin-Lehner	2- 31-	Signs for the Atkin-Lehner involutions
Class	1984l	Isogeny class
Conductor	1984	Conductor
∏ cp	4	Product of Tamagawa factors cp
deg	256	Modular degree for the optimal curve
Δ	-2031616 = -1 · 216 · 31	Discriminant
Eigenvalues	2- -2 -2  0  2 -4  6  4	Hecke eigenvalues for primes up to 20
Equation	[0,1,0,31,31]	[a1,a2,a3,a4,a6]
Generators	[1:8:1]	Generators of the group modulo torsion
j	48668/31	j-invariant
L	1.9316536158969	L(r)(E,1)/r!
Ω	1.6289980531243	Real period
R	1.1857924643876	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	1984d1 496c1 17856cd1 49600cg1	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 1984l1

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	-2	0	2	-4	6	4	0	4	-	-4	-10	-2	8	-4	0	0	12	0	2	-12	-14	-14	14

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Quadratic twists for elliptic curve 1984l1

-4	8	-3	5	-7	-31
1984d1	496c1	17856cd1	49600cg1	97216bs1	61504by1

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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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