Cremona's table of elliptic curves

20402 = 2 · 101²

Field	Data	Notes
Atkin-Lehner	2+ 101-	Signs for the Atkin-Lehner involutions
Class	20402b	Isogeny class
Conductor	20402	Conductor
∏ cp	3	Product of Tamagawa factors cp
deg	14688	Modular degree for the optimal curve
Δ	-832483208 = -1 · 23 · 1014	Discriminant
Eigenvalues	2+  1 -4 -2 -5  4 -3  4	Hecke eigenvalues for primes up to 20
Equation	[1,0,1,-213,-1848]	[a1,a2,a3,a4,a6]
Generators	[18:6:1] [42:231:1]	Generators of the group modulo torsion
j	-10201/8	j-invariant
L	4.9168846165784	L(r)(E,1)/r!
Ω	0.60480165294365	Real period
R	2.7099157730182	Regulator
r	2	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	1	Number of elements in the torsion subgroup
Twists	20402f1	Quadratic twists by: 101

Hecke Eigenvalues for elliptic curve 20402b1

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	-4	-2	-5	4	-3	4	4	-10	0	-2	-7	4	4	-2	1	-14	8	-8	-13	-12	-7	-13	-7

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Quadratic twists for elliptic curve 20402b1

101
20402f1

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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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