Cremona's table of elliptic curves

2015 = 5 · 13 · 31

Class	r	Atkin-Lehner	Eigenvalues
2015a (2 curves)	1	5+ 13- 31-	0  1 5+  2  0 13-  3 -7
Curve Equation t Generators 2015a1 [0,1,1,-31,240] 3 [6:17:1] 2015a2 [0,1,1,279,-6239] 1 [55:422:1]
2015b (2 curves)	1	5+ 13- 31-	0 -2 5+ -4  3 13-  0  2
Curve Equation t Generators 2015b1 [0,1,1,39,-105] 3 [9:32:1] 2015b2 [0,1,1,-1201,-16504] 1 [92:812:1]
2015c (1 curve)	2	5- 13+ 31+	-2 -3 5- -4 -6 13+ -1  1
Curve Equation t Generators 2015c1 [0,0,1,-127,552] 1 [12:-28:1]&[-8:32:1]

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

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