Cremona's table of elliptic curves

41236 = 2² · 13² · 61

Class	r	Atkin-Lehner	Eigenvalues
41236a (2 curves)	2	2- 13+ 61+	2-  0  2 -4 -4 13+ -6  4
Curve Equation t Generators 41236a1 [0,0,0,-2704,-32955] 2 [-17:90:1]&[546:2535:8] 41236a2 [0,0,0,8281,-232882] 2 [494:11154:1]&[4258:99585:8]
41236b (1 curve)	0	2- 13+ 61+	2- -1  3  4 -2 13+ -4  5
Curve Equation t 41236b1 [0,-1,0,-2929,-42394] 1
41236c (1 curve)	2	2- 13+ 61+	2- -1 -3 -4  2 13+ -4 -5
Curve Equation t Generators 41236c1 [0,-1,0,-17,-14] 1 [-3:1:1]&[-1:1:1]
41236d (2 curves)	1	2- 13+ 61-	2-  0 -2 -2  6 13+ -2 -2
Curve Equation t Generators 41236d1 [0,0,0,-20706556,36254184369] 2 [4112:143655:1] 41236d2 [0,0,0,-17562311,47642010910] 2 [462455:22812414:125]
41236e (1 curve)	1	2- 13+ 61-	2-  0  3  3  1 13+ -2 -2
Curve Equation t Generators 41236e1 [0,0,0,169,13182] 1 [131098:1321234:1331]
41236f (1 curve)	1	2- 13+ 61-	2- -3  1 -2  0 13+ -2  1
Curve Equation t Generators 41236f1 [0,0,0,-52,-143] 1 [-4:1:1]
41236g (1 curve)	1	2- 13+ 61-	2- -3 -1  2  0 13+ -2 -1
Curve Equation t Generators 41236g1 [0,0,0,-8788,-314171] 1 [-3644:2569:64]

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