Cremona's table of elliptic curves

1568 = 2⁵ · 7²

Class	r	Atkin-Lehner	Eigenvalues
1568a (2 curves)	0	2+ 7-	2+  0  4 7-  0 -4  8  0
Curve Equation t 1568a1 [0,0,0,7,0] 2 1568a2 [0,0,0,-28,0] 2
1568b (2 curves)	0	2+ 7-	2+  0 -4 7-  0  4 -8  0
Curve Equation t 1568b1 [0,0,0,343,0] 2 1568b2 [0,0,0,-1372,0] 2
1568c (2 curves)	0	2+ 7-	2+  2  0 7- -4  4  2  6
Curve Equation t 1568c1 [0,-1,0,82,176] 2 1568c2 [0,-1,0,-408,1940] 2
1568d (2 curves)	0	2+ 7-	2+  2  2 7-  4  6 -4  6
Curve Equation t 1568d1 [0,-1,0,-2,8] 2 1568d2 [0,-1,0,-72,260] 2
1568e (2 curves)	0	2+ 7-	2+ -2  0 7-  4  4  2 -6
Curve Equation t 1568e1 [0,1,0,82,-176] 2 1568e2 [0,1,0,-408,-1940] 2
1568f (2 curves)	0	2+ 7-	2+ -2 -2 7-  4 -6  4 -6
Curve Equation t 1568f1 [0,1,0,-114,-2528] 2 1568f2 [0,1,0,-3544,-82104] 2
1568g (4 curves)	1	2- 7-	2-  0  2 7-  0 -6 -2  0
Curve Equation t Generators 1568g1 [0,0,0,-49,0] 4 [25:120:1] 1568g2 [0,0,0,-539,-4802] 2 [49:294:1] 1568g3 [0,0,0,-539,4802] 2 [-14:98:1] 1568g4 [0,0,0,196,0] 2 [2:20:1]
1568h (2 curves)	1	2- 7-	2-  2 -2 7- -4 -6  4  6
Curve Equation t Generators 1568h1 [0,-1,0,-114,2528] 2 [2:48:1] 1568h2 [0,-1,0,-3544,82104] 2 [1083:1448:27]
1568i (2 curves)	1	2- 7-	2- -2  2 7- -4  6 -4 -6
Curve Equation t Generators 1568i1 [0,1,0,-2,-8] 2 [4:8:1] 1568i2 [0,1,0,-72,-260] 2 [11:20:1]

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