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	40	Product of Tamagawa factors cp
Δ	-86103879419980800 = -1 · 210 · 35 · 52 · 712	Discriminant
Eigenvalues	2+ 3- 5+ 7+  0  6 -2  4	Hecke eigenvalues for primes up to 20
Equation	[0,1,0,90384,-9452880]	[a1,a2,a3,a4,a6]
j	79743193254623804/84085819746075	j-invariant
L	1.8455221408688	L(r)(E,1)/r!
Ω	0.18455221408688	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	1680b4 6720i4 2520q4 4200r4	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 840d4

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 840d4

-4	8	-3	5	-7	-11
1680b4	6720i4	2520q4	4200r4	5880h4	101640co3

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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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