Cremona's table of elliptic curves

7840 = 2⁵ · 5 · 7²

Field	Data	Notes
Atkin-Lehner	2+ 5- 7-	Signs for the Atkin-Lehner involutions
Class	7840k	Isogeny class
Conductor	7840	Conductor
∏ cp	12	Product of Tamagawa factors cp
deg	9216	Modular degree for the optimal curve
Δ	-421654016000 = -1 · 212 · 53 · 77	Discriminant
Eigenvalues	2+ -1 5- 7- -1  1 -1  0	Hecke eigenvalues for primes up to 20
Equation	[0,-1,0,-14765,-686363]	[a1,a2,a3,a4,a6]
Generators	[159:980:1]	Generators of the group modulo torsion
j	-738763264/875	j-invariant
L	3.5713275422289	L(r)(E,1)/r!
Ω	0.2165349007225	Real period
R	1.374423372519	Regulator
r	1	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	1	Number of elements in the torsion subgroup
Twists	7840i1 15680cc1 70560cu1 39200br1	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 7840k1

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	-	-	-1	1	-1	0	-4	-1	10	-8	-2	4	11	4	8	-10	4	-12	-6	-7	-8	6	-1

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Quadratic twists for elliptic curve 7840k1

-4	8	-3	5	-7
7840i1	15680cc1	70560cu1	39200br1	1120a1

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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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