Cremona's table of elliptic curves

19855 = 5 · 11 · 19²

Field	Data	Notes
Atkin-Lehner	5- 11+ 19-	Signs for the Atkin-Lehner involutions
Class	19855b	Isogeny class
Conductor	19855	Conductor
∏ cp	2	Product of Tamagawa factors cp
deg	6912	Modular degree for the optimal curve
Δ	-2587523455 = -1 · 5 · 11 · 196	Discriminant
Eigenvalues	-1  0 5-  0 11+ -2  6 19-	Hecke eigenvalues for primes up to 20
Equation	[1,-1,1,293,-1574]	[a1,a2,a3,a4,a6]
Generators	[14670:72748:729]	Generators of the group modulo torsion
j	59319/55	j-invariant
L	3.0928181643042	L(r)(E,1)/r!
Ω	0.78977442286823	Real period
R	7.8321558023417	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	99275b1 55a4	Quadratic twists by: 5 -19

Hecke Eigenvalues for elliptic curve 19855b1

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	6	-	4	-6	8	2	-2	4	-12	2	-4	-10	16	-8	14	-8	-4	-10	-10

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Quadratic twists for elliptic curve 19855b1

5	-19
99275b1	55a4

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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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