Cremona's table of elliptic curves

20930 = 2 · 5 · 7 · 13 · 23

Class	r	Atkin-Lehner	Eigenvalues
20930a (4 curves)	1	2+ 5+ 7+ 13+ 23+	2+  0 5+ 7+  0 13+ -2  4
Curve Equation t Generators 20930a1 [1,-1,0,-121325,16295845] 2 [138:1403:1] 20930a2 [1,-1,0,-125245,15189621] 4 [-302:5191:1] 20930a3 [1,-1,0,-495545,-118340559] 2 [-3474:32535:8] 20930a4 [1,-1,0,182335,77874425] 2 [-10540:426695:64]
20930b (2 curves)	1	2+ 5+ 7- 13+ 23-	2+ -2 5+ 7- -4 13+ -2  4
Curve Equation t Generators 20930b1 [1,0,1,-554,4956] 2 [8:28:1] 20930b2 [1,0,1,-354,8636] 2 [14:73:1]
20930c (2 curves)	0	2+ 5+ 7- 13- 23-	2+  2 5+ 7-  0 13- -2  4
Curve Equation t 20930c1 [1,1,0,-563,-5383] 2 20930c2 [1,1,0,-513,-6313] 2
20930d (1 curve)	0	2+ 5+ 7- 13- 23-	2+ -2 5+ 7-  0 13-  0  7
Curve Equation t 20930d1 [1,0,1,-84588309,302458843232] 1
20930e (4 curves)	0	2+ 5+ 7- 13- 23-	2+ -2 5+ 7-  0 13-  6 -4
Curve Equation t 20930e1 [1,0,1,-14693374,21677333616] 6 20930e2 [1,0,1,-14692574,21679812336] 6 20930e3 [1,0,1,-14824589,21270411912] 2 20930e4 [1,0,1,5655411,75493259912] 2
20930f (1 curve)	0	2+ 5- 7+ 13+ 23+	2+ -1 5- 7+ -4 13+  6  8
Curve Equation t 20930f1 [1,1,0,-14892,-717104] 1
20930g (1 curve)	1	2- 5+ 7- 13+ 23+	2-  0 5+ 7- -2 13+  2  7
Curve Equation t Generators 20930g1 [1,-1,1,-718,7901] 1 [-7:115:1]
20930h (1 curve)	0	2- 5+ 7- 13+ 23-	2- -1 5+ 7-  4 13+  2  0
Curve Equation t 20930h1 [1,1,1,-3051,-201461] 1
20930i (1 curve)	1	2- 5+ 7- 13- 23-	2-  2 5+ 7-  0 13- -4 -5
Curve Equation t Generators 20930i1 [1,1,1,234,-937] 1 [33:193:1]
20930j (2 curves)	1	2- 5- 7+ 13+ 23+	2-  0 5- 7+  2 13+  4  0
Curve Equation t Generators 20930j1 [1,-1,1,-712,-7129] 2 [1385:50827:1] 20930j2 [1,-1,1,-642,-8641] 2 [1384990:50827373:1000]
20930k (1 curve)	1	2- 5- 7+ 13+ 23+	2-  0 5- 7+  2 13+ -6  5
Curve Equation t Generators 20930k1 [1,-1,1,-4675057,3891875489] 1 [1247:-524:1]
20930l (2 curves)	1	2- 5- 7- 13- 23+	2- -2 5- 7-  0 13-  0 -1
Curve Equation t Generators 20930l1 [1,0,0,-245,-2975] 3 [20:5:1] 20930l2 [1,0,0,-24945,-1518515] 1 [202:1201:1]

Data from Elliptic Curve Data by J. E. Cremona.
Design inspired by The Modular Forms Explorer by William Stein.

Part of Computational Number Theory
Back to Tables and computations