Cremona's table of elliptic curves

18515 = 5 · 7 · 23²

Field	Data	Notes
Atkin-Lehner	5+ 7+ 23-	Signs for the Atkin-Lehner involutions
Class	18515d	Isogeny class
Conductor	18515	Conductor
∏ cp	1	Product of Tamagawa factors cp
deg	556416	Modular degree for the optimal curve
Δ	-2098489683701796875 = -1 · 57 · 73 · 238	Discriminant
Eigenvalues	-1 -3 5+ 7+  5 -2  3 -2	Hecke eigenvalues for primes up to 20
Equation	[1,-1,1,-387063,-115871094]	[a1,a2,a3,a4,a6]
j	-81892654209/26796875	j-invariant
L	0.3765469324302	L(r)(E,1)/r!
Ω	0.094136733107551	Real period
R	1	Regulator
r	0	Rank of the group of rational points
S	4	(Analytic) order of Ш
t	1	Number of elements in the torsion subgroup
Twists	92575t1 129605bc1 18515q1	Quadratic twists by: 5 -7 -23

Hecke Eigenvalues for elliptic curve 18515d1

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	-3	+	+	5	-2	3	-2	-	-2	-8	-4	-8	6	3	14	-4	4	8	-7	-15	0	-9	16	7

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Quadratic twists for elliptic curve 18515d1

5	-7	-23
92575t1	129605bc1	18515q1

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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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