Cremona's table of elliptic curves

15680 = 2⁶ · 5 · 7²

Field	Data	Notes
Atkin-Lehner	2- 5+ 7+	Signs for the Atkin-Lehner involutions
Conductor	15680	Conductor
Count	2	Number of curves in isogeny class
Curves	15680ca1 15680ca2	Curves in isogeny class
deg	112896	Modular degree for the optimal curve
Eigenvalues	2- -2 5+ 7+  3  1 -6 -1	Hecke eigenvalues for primes less than 20
L	0.39970576480018	L(r)(E,1)/r!
r	0	Rank of the group of rational points
Twists	15680b 3920z 78400gj 15680dr	Quadratic twists by: -4 8 5 -7

Hecke Eigenvalues for isogeny class 15680ca

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	+	+	3	1	-6	-1	-9	-6	-8	7	3	2	-9	-9	0	-8	8	0	-4	10	0	6	-10

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Quadratic twists for isogeny class 15680ca

-4	8	5	-7
15680b	3920z	78400gj	15680dr

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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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