Cremona's table of elliptic curves

28208 = 2⁴ · 41 · 43

Class	r	Atkin-Lehner	Eigenvalues
28208a (2 curves)	1	2+ 41+ 43+	2+  0 -2 -4  2 -2  6 -8
Curve Equation t Generators 28208a1 [0,0,0,-71,-90] 2 [-7:8:1] 28208a2 [0,0,0,-931,-10926] 2 [146:1722:1]
28208b (2 curves)	1	2+ 41+ 43+	2+ -2 -2  2  0 -2 -2  2
Curve Equation t Generators 28208b1 [0,1,0,1,52] 2 [12:44:1] 28208b2 [0,1,0,-204,1036] 2 [6:8:1]
28208c (1 curve)	1	2+ 41- 43-	2+  1  2  1 -6  6  0  4
Curve Equation t Generators 28208c1 [0,1,0,-1312,18052] 1 [54:328:1]
28208d (1 curve)	0	2- 41+ 43+	2-  1  0 -3  2  6  0 -7
Curve Equation t 28208d1 [0,1,0,27,-109] 1
28208e (2 curves)	0	2- 41+ 43+	2- -1  0  1  0 -4  0  4
Curve Equation t 28208e1 [0,-1,0,-6288,-190016] 1 28208e2 [0,-1,0,7792,-875072] 1
28208f (1 curve)	2	2- 41+ 43+	2- -1 -4 -3  0  0  4 -4
Curve Equation t Generators 28208f1 [0,-1,0,-40,176] 1 [4:-8:1]&[-4:16:1]
28208g (1 curve)	1	2- 41+ 43-	2- -1 -2  0 -2  6  4  5
Curve Equation t Generators 28208g1 [0,-1,0,11,125] 1 [-4:1:1]
28208h (2 curves)	1	2- 41+ 43-	2-  2 -2  0 -2  0 -2  2
Curve Equation t Generators 28208h1 [0,-1,0,-78904,8552304] 2 [450:7998:1] 28208h2 [0,-1,0,-1262264,546271088] 2 [20406:130634:27]
28208i (1 curve)	1	2- 41- 43+	2- -1 -2  0  6  0  2  5
Curve Equation t Generators 28208i1 [0,-1,0,-1509,-22067] 1 [550436:176449:12167]
28208j (1 curve)	1	2- 41- 43+	2- -3  0 -1 -2  4  2  8
Curve Equation t Generators 28208j1 [0,0,0,-760,-15797] 1 [357:6724:1]
28208k (1 curve)	0	2- 41- 43-	2- -1  0  1  2  4  2  0
Curve Equation t 28208k1 [0,-1,0,-13,-16] 1
28208l (1 curve)	0	2- 41- 43-	2- -1  2  3  2 -6 -4 -4
Curve Equation t 28208l1 [0,-1,0,10208,4214528] 1
28208m (1 curve)	0	2- 41- 43-	2-  2 -1  0 -1  3 -4  8
Curve Equation t 28208m1 [0,-1,0,-256,-1536] 1

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