Cremona's table of elliptic curves

728 = 2³ · 7 · 13

Class	r	Atkin-Lehner	Eigenvalues
728a (1 curve)	0	2+ 7- 13+	2+ -1  0 7-  3 13+  4  2
Curve Equation t 728a1 [0,-1,0,-8,-20] 1
728b (1 curve)	0	2+ 7- 13+	2+  2  3 7-  0 13+ -2  5
Curve Equation t 728b1 [0,-1,0,1071,8501] 1
728c (1 curve)	1	2- 7+ 13-	2-  0 -1 7+  2 13-  0 -7
Curve Equation t Generators 728c1 [0,0,0,-68,-236] 1 [12:26:1]
728d (1 curve)	1	2- 7- 13+	2- -2 -1 7-  4 13+ -6  1
Curve Equation t Generators 728d1 [0,1,0,-1,51] 1 [5:-14:1]

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

Part of Computational Number Theory
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