Cremona's table of elliptic curves

18928 = 2⁴ · 7 · 13²

Field	Data	Notes
Atkin-Lehner	2- 7- 13-	Signs for the Atkin-Lehner involutions
Class	18928bf	Isogeny class
Conductor	18928	Conductor
∏ cp	8	Product of Tamagawa factors cp
deg	74880	Modular degree for the optimal curve
Δ	-608104412045312 = -1 · 213 · 7 · 139	Discriminant
Eigenvalues	2-  1  2 7-  5 13-  2 -4	Hecke eigenvalues for primes up to 20
Equation	[0,1,0,-44672,3808052]	[a1,a2,a3,a4,a6]
j	-226981/14	j-invariant
L	4.0570537319461	L(r)(E,1)/r!
Ω	0.50713171649327	Real period
R	1	Regulator
r	0	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	1	Number of elements in the torsion subgroup
Twists	2366n1 75712df1 18928t1	Quadratic twists by: -4 8 13

Hecke Eigenvalues for elliptic curve 18928bf1

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	-	5	-	2	-4	9	0	5	-3	-5	4	13	14	-6	-13	-3	0	-1	15	-6	6	-7

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Quadratic twists for elliptic curve 18928bf1

-4	8	13
2366n1	75712df1	18928t1

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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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