Cremona's table of elliptic curves

819 = 3² · 7 · 13

Field	Data	Notes
Atkin-Lehner	3+ 7+ 13+	Signs for the Atkin-Lehner involutions
Class	819a	Isogeny class
Conductor	819	Conductor
∏ cp	2	Product of Tamagawa factors cp
deg	96	Modular degree for the optimal curve
Δ	1791153 = 39 · 7 · 13	Discriminant
Eigenvalues	1 3+  0 7+  0 13+ -2 -4	Hecke eigenvalues for primes up to 20
Equation	[1,-1,0,-42,-73]	[a1,a2,a3,a4,a6]
Generators	[14:37:1]	Generators of the group modulo torsion
j	421875/91	j-invariant
L	2.7129683859921	L(r)(E,1)/r!
Ω	1.9019631700283	Real period
R	2.8528085388232	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	13104bk1 52416n1 819b1 20475k1	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 819a1

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

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Quadratic twists for elliptic curve 819a1

-4	8	-3	5	-7	-11	13
13104bk1	52416n1	819b1	20475k1	5733a1	99099j1	10647b1

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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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