Cremona's table of elliptic curves

315 = 3² · 5 · 7

Class	r	Atkin-Lehner	Eigenvalues
315b (4 curves)	1	3- 5+ 7-	-1 3- 5+ 7-  0 -6 -2 -8
Curve Equation t Generators 315b1 [1,-1,1,-23,-34] 2 [-2:1:1] 315b2 [1,-1,1,-68,182] 4 [-2:18:1] 315b3 [1,-1,1,-1013,12656] 2 [0:112:1] 315b4 [1,-1,1,157,992] 2 [0:31:1]
315a (3 curves)	0	3- 5- 7-	0 3- 5- 7-  3  5 -3  2
Curve Equation t 315a1 [0,0,1,-12,-18] 1 315a2 [0,0,1,78,45] 3 315a3 [0,0,1,-1182,16362] 3

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

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