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	819b	Isogeny class
Conductor	819	Conductor
∏ cp	2	Product of Tamagawa factors cp
deg	32	Modular degree for the optimal curve
Δ	2457 = 33 · 7 · 13	Discriminant
Eigenvalues	-1 3+  0 7+  0 13+  2 -4	Hecke eigenvalues for primes up to 20
Equation	[1,-1,1,-5,4]	[a1,a2,a3,a4,a6]
Generators	[-2:2:1]	Generators of the group modulo torsion
j	421875/91	j-invariant
L	1.5410481141703	L(r)(E,1)/r!
Ω	4.3270924952156	Real period
R	0.71227879499881	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	13104bj1 52416m1 819a1 20475i1	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 819b1

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 819b1

-4	8	-3	5	-7	-11	13
13104bj1	52416m1	819a1	20475i1	5733b1	99099i1	10647a1

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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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