Cremona's table of elliptic curves

21008 = 2⁴ · 13 · 101

Field	Data	Notes
Atkin-Lehner	2- 13+ 101-	Signs for the Atkin-Lehner involutions
Class	21008h	Isogeny class
Conductor	21008	Conductor
∏ cp	2	Product of Tamagawa factors cp
deg	2208	Modular degree for the optimal curve
Δ	273104 = 24 · 132 · 101	Discriminant
Eigenvalues	2- -2 -2  0  0 13+  6  4	Hecke eigenvalues for primes up to 20
Equation	[0,1,0,-29,46]	[a1,a2,a3,a4,a6]
Generators	[-2:10:1]	Generators of the group modulo torsion
j	174456832/17069	j-invariant
L	2.8268175197587	L(r)(E,1)/r!
Ω	3.0076790080557	Real period
R	1.8797335168995	Regulator
r	1	Rank of the group of rational points
S	1	(Analytic) order of Ш
t	2	Number of elements in the torsion subgroup
Twists	5252a1 84032s1	Quadratic twists by: -4 8

Hecke Eigenvalues for elliptic curve 21008h1

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	-2	0	0	+	6	4	4	-2	-8	10	-12	0	0	2	-8	-14	8	16	-4	0	-16	-12	2

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Quadratic twists for elliptic curve 21008h1

-4	8
5252a1	84032s1

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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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