Cremona's table of elliptic curves

107991 = 3² · 13² · 71

Class	r	Atkin-Lehner	Eigenvalues
107991a (2 curves)	0	3- 13+ 71+	1 3-  2 -2  0 13+  0  0
Curve Equation t 107991a1 [1,-1,0,729,-71928] 2 107991a2 [1,-1,0,-22086,-1208115] 2
107991b (1 curve)	1	3- 13+ 71-	0 3-  2  0  0 13+  0 -4
Curve Equation t Generators 107991b1 [0,0,1,-6084,-1141891] 1 [611507:835699:4913]
107991c (1 curve)	1	3- 13- 71+	0 3-  0  0  0 13-  0  6
Curve Equation t Generators 107991c1 [0,0,1,-13260,588838] 1 [104:578:1]
107991d (2 curves)	1	3- 13- 71+	-1 3-  2 -2  0 13-  2 -2
Curve Equation t Generators 107991d1 [1,-1,1,-32324324,77455797878] 2 [-3577362105347208:299900659940717498:812949929037] 107991d2 [1,-1,1,-530702789,4705796926640] 2 [47828581830:5633393635:3581577]
107991e (1 curve)	0	3- 13- 71-	0 3-  0  0  0 13-  0 -6
Curve Equation t 107991e1 [0,0,1,-2240940,1293677635] 1
107991f (2 curves)	0	3- 13- 71-	1 3- -2  2  0 13-  2  2
Curve Equation t 107991f1 [1,-1,0,-191268,35299395] 2 107991f2 [1,-1,0,-3140253,2142644076] 2

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

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