Cremona's table of elliptic curves

7581 = 3 · 7 · 19²

Field	Data	Notes
Atkin-Lehner	3+ 7+ 19-	Signs for the Atkin-Lehner involutions
Class	7581b	Isogeny class
Conductor	7581	Conductor
∏ cp	4	Product of Tamagawa factors cp
Δ	6915744507 = 3 · 72 · 196	Discriminant
Eigenvalues	1 3+ -2 7+  4  2 -6 19-	Hecke eigenvalues for primes up to 20
Equation	[1,1,0,-283031,57838326]	[a1,a2,a3,a4,a6]
j	53297461115137/147	j-invariant
L	0.87682224594065	L(r)(E,1)/r!
Ω	0.87682224594065	Real period
R	1	Regulator
r	0	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	2	Number of elements in the torsion subgroup
Twists	121296dk6 22743n6 53067q6 21a5	Quadratic twists by: -4 -3 -7 -19

Hecke Eigenvalues for elliptic curve 7581b5

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	+	4	2	-6	-	0	2	0	-6	-2	-4	0	-6	-12	-2	-4	0	-6	16	-12	14	-18

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Quadratic twists for elliptic curve 7581b5

-4	-3	-7	-19
121296dk6	22743n6	53067q6	21a5

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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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