Cremona's table of elliptic curves

2821 = 7 · 13 · 31

Field	Data	Notes
Atkin-Lehner	7- 13+ 31+	Signs for the Atkin-Lehner involutions
Class	2821b	Isogeny class
Conductor	2821	Conductor
∏ cp	12	Product of Tamagawa factors cp
Δ	-1469788957 = -1 · 76 · 13 · 312	Discriminant
Eigenvalues	1  0  0 7-  0 13+  2  4	Hecke eigenvalues for primes up to 20
Equation	[1,-1,0,-152,-1943]	[a1,a2,a3,a4,a6]
j	-389816897625/1469788957	j-invariant
L	1.865621238788	L(r)(E,1)/r!
Ω	0.62187374626266	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	45136e2 25389j2 70525g2 19747b2	Quadratic twists by: -4 -3 5 -7

Hecke Eigenvalues for elliptic curve 2821b2

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	0	0	-	0	+	2	4	-2	6	+	4	4	10	12	-6	0	2	4	-16	6	-10	4	6	12

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Quadratic twists for elliptic curve 2821b2

-4	-3	5	-7	13	-31
45136e2	25389j2	70525g2	19747b2	36673a2	87451f2

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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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