Cremona's table of elliptic curves

6256 = 2⁴ · 17 · 23

Class	r	Atkin-Lehner	Eigenvalues
6256a (2 curves)	1	2+ 17+ 23+	2+  2 -4  4 -2  2 17+  0
Curve Equation t Generators 6256a1 [0,-1,0,-3000,64256] 2 [-4:276:1] 6256a2 [0,-1,0,-3040,62496] 2 [90:714:1]
6256b (1 curve)	0	2+ 17- 23+	2+ -1  4 -1 -6  2 17- -3
Curve Equation t 6256b1 [0,-1,0,64,-992] 1
6256c (1 curve)	1	2+ 17- 23-	2+ -1 -2 -4  0 -1 17-  6
Curve Equation t Generators 6256c1 [0,-1,0,-1224,-16085] 1 [63:391:1]
6256d (1 curve)	1	2- 17+ 23-	2- -1 -4 -3 -6  6 17+  3
Curve Equation t Generators 6256d1 [0,-1,0,-960,11776] 1 [16:16:1]
6256e (2 curves)	1	2- 17+ 23-	2-  2  0 -4  2  2 17+ -4
Curve Equation t Generators 6256e1 [0,-1,0,-1586448,769635776] 2 [890:7866:1] 6256e2 [0,-1,0,-1596688,759207360] 2 [408:13248:1]
6256f (2 curves)	1	2- 17+ 23-	2-  2  2  0  0 -6 17+ -6
Curve Equation t Generators 6256f1 [0,-1,0,88,-400] 2 [975:5950:27] 6256f2 [0,-1,0,-552,-3472] 2 [146:1734:1]
6256g (1 curve)	1	2- 17+ 23-	2-  3  0 -2 -4 -1 17+ -2
Curve Equation t Generators 6256g1 [0,0,0,-445,3623] 1 [282:289:27]
6256h (1 curve)	1	2- 17+ 23-	2- -3  0  1  2  2 17+  1
Curve Equation t Generators 6256h1 [0,0,0,5,-86] 1 [5:8:1]
6256i (4 curves)	1	2- 17- 23+	2-  0  2  0  0  6 17- -4
Curve Equation t Generators 6256i1 [0,0,0,-8459,-16198] 2 [-89:178:1] 6256i2 [0,0,0,-90379,10420410] 4 [8103:728910:1] 6256i3 [0,0,0,-1444619,668310202] 4 [-157455:2765152:125] 6256i4 [0,0,0,-46859,20473530] 2 [-57463361381985:555525594945342:193602111625]
6256j (1 curve)	1	2- 17- 23+	2- -3  2  0  0  3 17-  2
Curve Equation t Generators 6256j1 [0,0,0,11,7] 1 [6:17:1]

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