Cremona's table of elliptic curves

7820 = 2² · 5 · 17 · 23

Class	r	Atkin-Lehner	Eigenvalues
7820a (1 curve)	0	2- 5+ 17- 23-	2-  3 5+  2  5  6 17-  0
Curve Equation t 7820a1 [0,0,0,1592,857] 1
7820b (2 curves)	1	2- 5- 17+ 23+	2-  0 5- -4 -2  2 17+  8
Curve Equation t Generators 7820b1 [0,0,0,-532,-531] 2 [-17:60:1] 7820b2 [0,0,0,2113,-4234] 2 [22:230:1]
7820c (1 curve)	1	2- 5- 17+ 23+	2-  1 5-  2  2 -3 17+  4
Curve Equation t Generators 7820c1 [0,1,0,-50,-175] 1 [20:85:1]
7820d (2 curves)	1	2- 5- 17+ 23+	2-  1 5-  2 -3  2 17+ -4
Curve Equation t Generators 7820d1 [0,1,0,-125,500] 3 [-1:25:1] 7820d2 [0,1,0,275,2920] 1 [408:2800:27]
7820e (1 curve)	2	2- 5- 17+ 23-	2- -1 5- -4 -4 -5 17+ -2
Curve Equation t Generators 7820e1 [0,-1,0,-550,11177] 1 [-26:85:1]&[-16:125:1]
7820f (1 curve)	0	2- 5- 17- 23+	2-  1 5-  2  3 -2 17-  8
Curve Equation t 7820f1 [0,1,0,-5,8] 1

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

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