Cremona's table of elliptic curves

840 = 2³ · 3 · 5 · 7

Field	Data	Notes
Atkin-Lehner	2+ 3- 5+ 7+	Signs for the Atkin-Lehner involutions
Class	840d	Isogeny class
Conductor	840	Conductor
∏ cp	80	Product of Tamagawa factors cp
Δ	1111528928160000 = 28 · 310 · 54 · 76	Discriminant
Eigenvalues	2+ 3- 5+ 7+  0  6 -2  4	Hecke eigenvalues for primes up to 20
Equation	[0,1,0,-31116,-1385280]	[a1,a2,a3,a4,a6]
j	13015144447800784/4341909875625	j-invariant
L	1.8455221408688	L(r)(E,1)/r!
Ω	0.36910442817376	Real period
R	1	Regulator
r	0	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	4	Number of elements in the torsion subgroup
Twists	1680b2 6720i2 2520q2 4200r2	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 840d2

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

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Quadratic twists for elliptic curve 840d2

-4	8	-3	5	-7	-11
1680b2	6720i2	2520q2	4200r2	5880h2	101640co2

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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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