Cremona's table of elliptic curves

12640 = 2⁵ · 5 · 79

Class	r	Atkin-Lehner	Eigenvalues
12640a (1 curve)	1	2+ 5+ 79+	2+  1 5+  1  5  0  2 -4
Curve Equation t Generators 12640a1 [0,1,0,-572221,166416619] 1 [477:1492:1]
12640b (1 curve)	1	2+ 5+ 79+	2+ -1 5+ -5 -3  0  6 -4
Curve Equation t Generators 12640b1 [0,-1,0,19,-59] 1 [3:4:1]
12640c (1 curve)	0	2+ 5+ 79-	2+  1 5+  5  3  0  6  4
Curve Equation t 12640c1 [0,1,0,19,59] 1
12640d (1 curve)	1	2- 5+ 79-	2- -1 5+ -1 -5  0  2  4
Curve Equation t Generators 12640d1 [0,-1,0,-572221,-166416619] 1 [26301:381412:27]
12640e (2 curves)	1	2- 5- 79+	2-  2 5-  4  0 -6 -6 -4
Curve Equation t Generators 12640e1 [0,-1,0,10,-88] 2 [122:465:8] 12640e2 [0,-1,0,-240,-1288] 2 [4254:7595:216]
12640f (2 curves)	2	2- 5- 79-	2- -2 5- -4  0 -6 -6  4
Curve Equation t Generators 12640f1 [0,1,0,10,88] 2 [-2:8:1]&[1:10:1] 12640f2 [0,1,0,-240,1288] 2 [-2:42:1]&[6:10:1]

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

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