Cremona's table of elliptic curves

855 = 3² · 5 · 19

Field	Data	Notes
Atkin-Lehner	3- 5+ 19+	Signs for the Atkin-Lehner involutions
Class	855a	Isogeny class
Conductor	855	Conductor
∏ cp	4	Product of Tamagawa factors cp
deg	576	Modular degree for the optimal curve
Δ	-11359551375 = -1 · 314 · 53 · 19	Discriminant
Eigenvalues	-1 3- 5+  4 -4  2 -2 19+	Hecke eigenvalues for primes up to 20
Equation	[1,-1,1,202,4956]	[a1,a2,a3,a4,a6]
j	1256216039/15582375	j-invariant
L	0.94240327105651	L(r)(E,1)/r!
Ω	0.94240327105651	Real period
R	1	Regulator
r	0	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	2	Number of elements in the torsion subgroup
Twists	13680bg1 54720cl1 285c1 4275g1	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 855a1

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	-	+	4	-4	2	-2	+	4	2	0	-6	6	8	12	14	-4	14	-4	0	-14	16	0	6	-10

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Quadratic twists for elliptic curve 855a1

-4	8	-3	5	-7	-11	-19
13680bg1	54720cl1	285c1	4275g1	41895bx1	103455p1	16245c1

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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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