Cremona's table of elliptic curves

21840 = 2⁴ · 3 · 5 · 7 · 13

Field	Data	Notes
Atkin-Lehner	2- 3- 5- 7+ 13-	Signs for the Atkin-Lehner involutions
Class	21840cg	Isogeny class
Conductor	21840	Conductor
∏ cp	1024	Product of Tamagawa factors cp
Δ	1.16079215616E+19	Discriminant
Eigenvalues	2- 3- 5- 7+  4 13- -6  4	Hecke eigenvalues for primes up to 20
Equation	[0,1,0,-584480,51866100]	[a1,a2,a3,a4,a6]
Generators	[-785:5250:1]	Generators of the group modulo torsion
j	5391051390768345121/2833965225000000	j-invariant
L	7.124386372253	L(r)(E,1)/r!
Ω	0.19876385436701	Real period
R	2.2402169130995	Regulator
r	1	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	8	Number of elements in the torsion subgroup
Twists	2730x3 87360ec3 65520cv3 109200ds3	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 21840cg3

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	-	-6	4	8	-10	0	-2	-6	-12	-8	-2	-4	-2	4	-8	-14	-16	4	-6	-6

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Quadratic twists for elliptic curve 21840cg3

-4	8	-3	5
2730x3	87360ec3	65520cv3	109200ds3

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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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