Cremona's table of elliptic curves

1281 = 3 · 7 · 61

Field	Data	Notes
Atkin-Lehner	3+ 7+ 61+	Signs for the Atkin-Lehner involutions
Class	1281a	Isogeny class
Conductor	1281	Conductor
∏ cp	2	Product of Tamagawa factors cp
deg	952	Modular degree for the optimal curve
Δ	-2042327763 = -1 · 314 · 7 · 61	Discriminant
Eigenvalues	2 3+  0 7+ -4 -4  3 -4	Hecke eigenvalues for primes up to 20
Equation	[0,-1,1,-448,4401]	[a1,a2,a3,a4,a6]
Generators	[362:2183:8]	Generators of the group modulo torsion
j	-9966135808000/2042327763	j-invariant
L	4.0164387097642	L(r)(E,1)/r!
Ω	1.4092968009118	Real period
R	1.4249797158291	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	20496w1 81984x1 3843e1 32025v1	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for elliptic curve 1281a1

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
2	+	0	+	-4	-4	3	-4	-2	8	-3	8	-10	6	-6	4	-9	+	-12	10	-4	10	-8	6	-2

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Quadratic twists for elliptic curve 1281a1

-4	8	-3	5	-7	61
20496w1	81984x1	3843e1	32025v1	8967m1	78141d1

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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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