Cremona's table of elliptic curves

19881 = 3² · 47²

Field	Data	Notes
Atkin-Lehner	3- 47-	Signs for the Atkin-Lehner involutions
Class	19881k	Isogeny class
Conductor	19881	Conductor
∏ cp	16	Product of Tamagawa factors cp
Δ	156225851787813921 = 38 · 478	Discriminant
Eigenvalues	1 3-  2  0  4  2 -2  0	Hecke eigenvalues for primes up to 20
Equation	[1,-1,0,-934821,347602752]	[a1,a2,a3,a4,a6]
Generators	[4255623563759488:3019799136215692871:167904261701632]	Generators of the group modulo torsion
j	11497268593/19881	j-invariant
L	7.3776883057675	L(r)(E,1)/r!
Ω	0.32422106827165	Real period
R	22.755116887056	Regulator
r	1	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	4	Number of elements in the torsion subgroup
Twists	6627g2 423c2	Quadratic twists by: -3 -47

Hecke Eigenvalues for elliptic curve 19881k2

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	-	2	0	4	2	-2	0	0	-6	4	-10	-2	-8	-	2	4	14	8	-16	-2	8	4	-18	-14

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Quadratic twists for elliptic curve 19881k2

-3	-47
6627g2	423c2

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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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