Cremona's table of elliptic curves

20976 = 2⁴ · 3 · 19 · 23

Field	Data	Notes
Atkin-Lehner	2+ 3- 19- 23+	Signs for the Atkin-Lehner involutions
Class	20976b	Isogeny class
Conductor	20976	Conductor
∏ cp	8	Product of Tamagawa factors cp
deg	7168	Modular degree for the optimal curve
Δ	-208417536 = -1 · 28 · 34 · 19 · 232	Discriminant
Eigenvalues	2+ 3- -3  1  5 -2  3 19-	Hecke eigenvalues for primes up to 20
Equation	[0,1,0,143,-181]	[a1,a2,a3,a4,a6]
Generators	[14:69:1]	Generators of the group modulo torsion
j	1254444032/814131	j-invariant
L	5.6829193888293	L(r)(E,1)/r!
Ω	1.0170769787714	Real period
R	0.69843771752828	Regulator
r	1	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	1	Number of elements in the torsion subgroup
Twists	10488a1 83904w1 62928l1	Quadratic twists by: -4 8 -3

Hecke Eigenvalues for elliptic curve 20976b1

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
+	-	-3	1	5	-2	3	-	+	-6	8	-6	0	1	-3	-12	0	-7	2	-6	-11	-6	16	6	-2

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Quadratic twists for elliptic curve 20976b1

-4	8	-3
10488a1	83904w1	62928l1

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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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