Cremona's table of elliptic curves

21648 = 2⁴ · 3 · 11 · 41

Field	Data	Notes
Atkin-Lehner	2+ 3- 11+ 41-	Signs for the Atkin-Lehner involutions
Class	21648i	Isogeny class
Conductor	21648	Conductor
∏ cp	6	Product of Tamagawa factors cp
deg	23040	Modular degree for the optimal curve
Δ	-1598370619824 = -1 · 24 · 32 · 115 · 413	Discriminant
Eigenvalues	2+ 3- -1 -3 11+  2 -3  3	Hecke eigenvalues for primes up to 20
Equation	[0,1,0,-2791,82268]	[a1,a2,a3,a4,a6]
Generators	[8:246:1]	Generators of the group modulo torsion
j	-150327638431744/99898163739	j-invariant
L	5.1503870310142	L(r)(E,1)/r!
Ω	0.77955884659476	Real period
R	1.1011328294868	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	10824d1 86592cm1 64944t1	Quadratic twists by: -4 8 -3

Hecke Eigenvalues for elliptic curve 21648i1

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	-3	+	2	-3	3	-1	5	3	5	-	2	-2	0	9	-10	2	-6	-14	-4	0	-14	-8

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Quadratic twists for elliptic curve 21648i1

-4	8	-3
10824d1	86592cm1	64944t1

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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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