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	840a	Isogeny class
Conductor	840	Conductor
∏ cp	2	Product of Tamagawa factors cp
deg	192	Modular degree for the optimal curve
Δ	241920 = 28 · 33 · 5 · 7	Discriminant
Eigenvalues	2+ 3+ 5+ 7+  4 -2 -6  0	Hecke eigenvalues for primes up to 20
Equation	[0,-1,0,-316,-2060]	[a1,a2,a3,a4,a6]
Generators	[54:368:1]	Generators of the group modulo torsion
j	13674725584/945	j-invariant
L	1.9611172164749	L(r)(E,1)/r!
Ω	1.132048714962	Real period
R	3.4647223048892	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	1680g1 6720bb1 2520r1 4200ba1	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 840a1

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

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Quadratic twists for elliptic curve 840a1

-4	8	-3	5	-7	-11
1680g1	6720bb1	2520r1	4200ba1	5880p1	101640bv1

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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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