Cremona's table of elliptic curves

1680 = 2⁴ · 3 · 5 · 7

Field	Data	Notes
Atkin-Lehner	2+ 3+ 5+ 7+	Signs for the Atkin-Lehner involutions
Conductor	1680	Conductor
Count	4	Number of curves in isogeny class
Curves	1680a1 1680a2 1680a3 1680a4	Curves in isogeny class
deg	128	Modular degree for the optimal curve
Eigenvalues	2+ 3+ 5+ 7+  0  2  2 -4	Hecke eigenvalues for primes less than 20
L	2.3423776590419	L(r)(E,1)/r!
r	1	Rank of the group of rational points
Twists	840i 6720cf 5040n 8400y	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for isogeny class 1680a

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
+	+	+	+	0	2	2	-4	0	2	-4	2	-2	-8	4	-2	-12	-14	-8	8	-2	-8	4	-18	-2

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Quadratic twists for isogeny class 1680a

-4	8	-3	5	-7
840i	6720cf	5040n	8400y	11760bd

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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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