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	1680j	Isogeny class
Conductor	1680	Conductor
∏ cp	32	Product of Tamagawa factors cp
Δ	70560000 = 28 · 32 · 54 · 72	Discriminant
Eigenvalues	2+ 3- 5- 7-  4 -2  2  4	Hecke eigenvalues for primes up to 20
Equation	[0,1,0,-180,-900]	[a1,a2,a3,a4,a6]
j	2533446736/275625	j-invariant
L	2.6239997853832	L(r)(E,1)/r!
Ω	1.3119998926916	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	840f2 6720bm2 5040m2 8400c2	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 1680j2

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	2	4	0	-10	0	6	-6	4	8	6	4	-10	-4	16	-14	-8	4	10	10

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Quadratic twists for elliptic curve 1680j2

-4	8	-3	5	-7
840f2	6720bm2	5040m2	8400c2	11760e2

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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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