Cremona's table of elliptic curves

2680 = 2³ · 5 · 67

Class	r	Atkin-Lehner	Eigenvalues
2680a (1 curve)	1	2+ 5- 67-	2+  0 5-  1 -1 -2  2 -6
Curve Equation t Generators 2680a1 [0,0,0,-66227,6620654] 1 [118:670:1]
2680b (1 curve)	1	2+ 5- 67-	2+ -3 5-  1  2 -2 -4  0
Curve Equation t Generators 2680b1 [0,0,0,-7,19] 1 [3:-5:1]
2680c (1 curve)	0	2- 5+ 67+	2-  0 5+ -2 -2  6  1  1
Curve Equation t 2680c1 [0,0,0,-4028,-100348] 1
2680d (1 curve)	1	2- 5+ 67-	2- -1 5+ -1  0  2  2  4
Curve Equation t Generators 2680d1 [0,-1,0,4,1] 1 [0:1:1]
2680e (1 curve)	1	2- 5+ 67-	2-  2 5+ -3  1  0  0  6
Curve Equation t Generators 2680e1 [0,-1,0,-1456,21900] 1 [21:12:1]
2680f (1 curve)	1	2- 5- 67+	2-  1 5-  1  0 -2 -6 -4
Curve Equation t Generators 2680f1 [0,1,0,-80,-547] 1 [26:125:1]
2680g (1 curve)	1	2- 5- 67+	2- -2 5- -2  4 -6 -1  5
Curve Equation t Generators 2680g1 [0,1,0,55,43] 1 [1:10:1]

Data from Elliptic Curve Data by J. E. Cremona.
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