Cremona's table of elliptic curves

1640 = 2³ · 5 · 41

Field	Data	Notes
Atkin-Lehner	2+ 5- 41+	Signs for the Atkin-Lehner involutions
Conductor	1640	Conductor
Count	2	Number of curves in isogeny class
Curves	1640a1 1640a2	Curves in isogeny class
deg	2304	Modular degree for the optimal curve
Eigenvalues	2+  0 5-  2  4  4  2 -8	Hecke eigenvalues for primes less than 20
L	2.1272704822393	L(r)(E,1)/r!
r	0	Rank of the group of rational points
Twists	3280a 13120a 14760s 8200g	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for isogeny class 1640a

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	4	4	2	-8	4	4	4	-6	+	4	-2	12	-4	10	-4	-6	6	6	-4	18	10

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Quadratic twists for isogeny class 1640a

-4	8	-3	5	-7	41
3280a	13120a	14760s	8200g	80360d	67240d

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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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