Cremona's table of elliptic curves

15987 = 3 · 73²

Class	r	Atkin-Lehner	Eigenvalues
15987a (1 curve)	1	3+ 73+	1 3+  2 -4  2  1 -3  2
Curve Equation t Generators 15987a1 [1,1,0,-8104,4105165] 1 [1708:69691:1]
15987b (1 curve)	1	3+ 73+	1 3+ -2  4 -2 -1  3  2
Curve Equation t Generators 15987b1 [1,1,0,-1,10] 1 [-2:4:1]
15987c (2 curves)	1	3+ 73+	1 3+  4 -2  4  2  0 -4
Curve Equation t Generators 15987c1 [1,1,0,-439753,-105485720] 2 [-921195095854086981720:-77750279406960531424:2010418452601807625] 15987c2 [1,1,0,-6914488,-7001078495] 2 [-261422699574368721229011450206692616536960860:124847847638708346733076497960168443134212163:171852754736040317650504820515551789896000]
15987d (1 curve)	1	3+ 73+	-2 3+  1 -2  4  2  3 -1
Curve Equation t Generators 15987d1 [0,-1,1,-33750,2413790] 1 [538:5325:8]
15987e (2 curves)	0	3- 73+	0 3-  3  4  0  4 -3 -1
Curve Equation t 15987e1 [0,1,1,14211,519824] 1 15987e2 [0,1,1,-145659,-29487775] 1
15987f (2 curves)	0	3- 73+	-1 3-  0  2  6  4 -4  4
Curve Equation t 15987f1 [1,0,0,-38,3] 2 15987f2 [1,0,0,-403,-3136] 2
15987g (2 curves)	0	3- 73+	-1 3-  0 -2 -6 -4  4  4
Curve Equation t 15987g1 [1,0,0,-202613,2382504] 2 15987g2 [1,0,0,-2147698,-1207071349] 2

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

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