Cremona's table of elliptic curves

20995 = 5 · 13 · 17 · 19

Class	r	Atkin-Lehner	Eigenvalues
20995a (1 curve)	0	5+ 13+ 17+ 19-	0  1 5+ -2  4 13+ 17+ 19-
Curve Equation t 20995a1 [0,1,1,-1806111,1082953720] 1
20995b (4 curves)	1	5+ 13- 17- 19+	-1  0 5+  4  0 13- 17- 19+
Curve Equation t Generators 20995b1 [1,-1,1,32,1082] 4 [-96:850:27] 20995b2 [1,-1,1,-1413,20156] 4 [-24:211:1] 20995b3 [1,-1,1,-3538,-52944] 2 [-20:107:1] 20995b4 [1,-1,1,-22408,1296652] 2 [197:2022:1]
20995c (2 curves)	1	5- 13- 17+ 19+	1  0 5-  2  2 13- 17+ 19+
Curve Equation t Generators 20995c1 [1,-1,0,-3629,65328] 2 [-28:394:1] 20995c2 [1,-1,0,-19684,-1003935] 2 [-562:1631:8]
20995d (1 curve)	2	5- 13- 17+ 19-	0 -1 5- -2 -4 13- 17+ 19-
Curve Equation t Generators 20995d1 [0,-1,1,-195,1563] 1 [-11:47:1]&[13:32:1]
20995e (1 curve)	2	5- 13- 17- 19+	-2 -3 5- -4 -4 13- 17- 19+
Curve Equation t Generators 20995e1 [0,0,1,-6007,179262] 1 [2187:102212:1]&[-48:597:1]

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

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