Cremona's table of elliptic curves

855 = 3² · 5 · 19

Class	r	Atkin-Lehner	Eigenvalues
855a (4 curves)	0	3- 5+ 19+	-1 3- 5+  4 -4  2 -2 19+
Curve Equation t 855a1 [1,-1,1,202,4956] 2 855a2 [1,-1,1,-3443,73482] 4 855a3 [1,-1,1,-11138,-363594] 2 855a4 [1,-1,1,-54068,4852482] 2
855b (2 curves)	1	3- 5- 19+	-1 3- 5- -2  2 -4 -2 19+
Curve Equation t Generators 855b1 [1,-1,1,13,474] 2 [2:21:1] 855b2 [1,-1,1,-842,9366] 2 [-4:114:1]
855c (2 curves)	0	3- 5- 19-	1 3- 5- -2  6  0  6 19-
Curve Equation t 855c1 [1,-1,0,171,0] 2 855c2 [1,-1,0,-684,513] 2

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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