Cremona's table of elliptic curves
Conductor 20740
20740 = 2
2
· 5 · 17 · 61
Isogeny classes of curves of conductor 20740
[newforms of level 20740]
Class
r
Atkin-Lehner
Eigenvalues
20740a
(2 curves)
1
2
-
5
+
17
-
61
+
2
-
0
5
+
-2
2
-2
17
-
-4
Curve
Equation
t
Generators
20740a1
[0,0,0,-5668,-163467]
2
[-100269:27132:2197]
20740a2
[0,0,0,-2543,-342842]
2
[2322:38675:8]
20740b
(2 curves)
1
2
-
5
+
17
-
61
+
2
-
2
5
+
0
4
2
17
-
0
Curve
Equation
t
Generators
20740b1
[0,-1,0,-8641,312066]
2
[45:111:1]
20740b2
[0,-1,0,-8636,312440]
2
[46:102:1]
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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