Cremona's table of elliptic curves

1581 = 3 · 17 · 31

Field	Data	Notes
Atkin-Lehner	3+ 17+ 31-	Signs for the Atkin-Lehner involutions
Conductor	1581	Conductor
Count	4	Number of curves in isogeny class
Curves	1581b1 1581b2 1581b3 1581b4	Curves in isogeny class
deg	128	Modular degree for the optimal curve
Eigenvalues	-1 3+  2  0  4  6 17+ -4	Hecke eigenvalues for primes less than 20
L	1.156103306659	L(r)(E,1)/r!
r	0	Rank of the group of rational points
Twists	25296m 101184o 4743d 39525f	Quadratic twists by: -4 8 -3 5

Hecke Eigenvalues for isogeny class 1581b

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

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Quadratic twists for isogeny class 1581b

-4	8	-3	5	-7	17	-31
25296m	101184o	4743d	39525f	77469ba	26877a	49011i

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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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