Cremona's table of elliptic curves

1680 = 2⁴ · 3 · 5 · 7

Field	Data	Notes
Atkin-Lehner	2- 3+ 5- 7+	Signs for the Atkin-Lehner involutions
Class	1680n	Isogeny class
Conductor	1680	Conductor
∏ cp	4	Product of Tamagawa factors cp
deg	256	Modular degree for the optimal curve
Δ	430080 = 212 · 3 · 5 · 7	Discriminant
Eigenvalues	2- 3+ 5- 7+  0 -6  2  8	Hecke eigenvalues for primes up to 20
Equation	[0,-1,0,-40,-80]	[a1,a2,a3,a4,a6]
Generators	[-3:2:1]	Generators of the group modulo torsion
j	1771561/105	j-invariant
L	2.5500823063495	L(r)(E,1)/r!
Ω	1.9014696819229	Real period
R	1.3411112102354	Regulator
r	1	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	2	Number of elements in the torsion subgroup
Twists	105a1 6720bx1 5040bd1 8400cg1	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 1680n1

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	8	-8	-2	-4	-2	-6	-4	-8	10	-4	-2	-4	12	-2	-8	4	-6	-18

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Quadratic twists for elliptic curve 1680n1

-4	8	-3	5	-7
105a1	6720bx1	5040bd1	8400cg1	11760ce1

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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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