Cremona's table of elliptic curves

19220 = 2² · 5 · 31²

Class	r	Atkin-Lehner	Eigenvalues
19220a (2 curves)	1	2- 5+ 31-	2- -1 5+ -4  0 -2  3 -7
Curve Equation t Generators 19220a1 [0,-1,0,-97381,-11667679] 1 [424:4805:1] 19220a2 [0,-1,0,56379,-43972655] 1 [2540680:36032695:6859]
19220b (4 curves)	1	2- 5+ 31-	2-  2 5+  2  0 -2  6 -4
Curve Equation t Generators 19220b1 [0,-1,0,-1281,-11710] 2 [1218:3844:27] 19220b2 [0,-1,0,3524,-82824] 2 [741:20220:1] 19220b3 [0,-1,0,-39721,3059646] 2 [-2379972:54128325:21952] 19220b4 [0,-1,0,-34916,3822680] 2 [-964036581900:23278991105791:9261000000]
19220c (2 curves)	0	2- 5- 31-	2-  0 5- -2  4  4  0  0
Curve Equation t 19220c1 [0,0,0,-1010972,-391126039] 2 19220c2 [0,0,0,-1159927,-268297746] 2
19220d (1 curve)	0	2- 5- 31-	2-  3 5- -2 -2 -2  3 -3
Curve Equation t 19220d1 [0,0,0,7688,-119164] 1

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

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