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	840c	Isogeny class
Conductor	840	Conductor
∏ cp	8	Product of Tamagawa factors cp
deg	64	Modular degree for the optimal curve
Δ	210000 = 24 · 3 · 54 · 7	Discriminant
Eigenvalues	2+ 3+ 5- 7+  0  2  2  0	Hecke eigenvalues for primes up to 20
Equation	[0,-1,0,-15,12]	[a1,a2,a3,a4,a6]
j	24918016/13125	j-invariant
L	1.3878783222606	L(r)(E,1)/r!
Ω	2.7757566445213	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	1680i1 6720p1 2520o1 4200z1	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 840c1

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	2	2	0	0	6	4	-2	10	4	0	2	4	6	-12	12	-2	0	4	10	-2

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Quadratic twists for elliptic curve 840c1

-4	8	-3	5	-7	-11
1680i1	6720p1	2520o1	4200z1	5880k1	101640ce1

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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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