Cremona's table of elliptic curves

13237 = 7 · 31 · 61

Class	r	Atkin-Lehner	Eigenvalues
13237a (1 curve)	1	7+ 31+ 61+	-1  2  2 7+ -2  5  6 -7
Curve Equation t Generators 13237a1 [1,1,1,-62,304] 1 [-4:24:1]
13237b (1 curve)	0	7+ 31- 61+	0 -2  3 7+  1  0  2  4
Curve Equation t 13237b1 [0,1,1,-72119,-7478676] 1
13237c (1 curve)	1	7+ 31- 61-	-2 -1  0 7+  1  1 -6 -4
Curve Equation t Generators 13237c1 [0,-1,1,-68,156] 1 [-7:15:1]
13237d (1 curve)	1	7- 31+ 61-	1 -2  2 7- -6 -1  2  7
Curve Equation t Generators 13237d1 [1,0,1,45,-121] 1 [23:103:1]
13237e (1 curve)	1	7- 31- 61+	0 -2 -1 7-  5  0  2 -4
Curve Equation t Generators 13237e1 [0,1,1,-1,14] 1 [-2:3:1]
13237f (1 curve)	2	7- 31- 61-	-1 -1 -2 7-  3 -4  3 -7
Curve Equation t Generators 13237f1 [1,1,1,-249,-188] 1 [-16:11:1]&[-5:33:1]

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

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