Cremona's table of elliptic curves

6820 = 2² · 5 · 11 · 31

Class	r	Atkin-Lehner	Eigenvalues
6820a (2 curves)	0	2- 5- 11+ 31-	2-  0 5- -2 11+  0 -4 -4
Curve Equation t 6820a1 [0,0,0,-212,-1179] 2 6820a2 [0,0,0,-367,774] 2
6820b (2 curves)	1	2- 5- 11- 31-	2-  0 5-  2 11-  4  0 -8
Curve Equation t Generators 6820b1 [0,0,0,-1292,15949] 2 [3:110:1] 6820b2 [0,0,0,-20047,1092486] 2 [102:330:1]
6820c (2 curves)	1	2- 5- 11- 31-	2- -2 5- -4 11-  0 -4  4
Curve Equation t Generators 6820c1 [0,1,0,-29565,-1882100] 2 [-85:155:1] 6820c2 [0,1,0,-82420,6659268] 2 [256:1550:1]

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

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