Cremona's table of elliptic curves

20680 = 2³ · 5 · 11 · 47

Class	r	Atkin-Lehner	Eigenvalues
20680a (1 curve)	1	2+ 5+ 11+ 47+	2+  0 5+ -2 11+ -5  0  2
Curve Equation t Generators 20680a1 [0,0,0,-11948348,15896845108] 1 [2098:7986:1]
20680b (2 curves)	0	2+ 5+ 11- 47+	2+  0 5+ -2 11-  4  0  8
Curve Equation t 20680b1 [0,0,0,-3238,-105087] 2 20680b2 [0,0,0,-58463,-5439822] 2
20680c (1 curve)	1	2+ 5- 11+ 47-	2+ -2 5-  1 11+ -1  8  0
Curve Equation t Generators 20680c1 [0,1,0,-56440,21864288] 1 [-4:4700:1]
20680d (1 curve)	1	2+ 5- 11- 47+	2+  2 5- -3 11-  5  0 -4
Curve Equation t Generators 20680d1 [0,-1,0,1000,17852] 1 [34:300:1]
20680e (1 curve)	1	2- 5+ 11- 47+	2-  0 5+ -2 11- -1  8 -6
Curve Equation t Generators 20680e1 [0,0,0,-4988,-774588] 1 [344:6182:1]
20680f (4 curves)	0	2- 5+ 11- 47-	2-  0 5+  0 11- -6  2 -4
Curve Equation t 20680f1 [0,0,0,-863,-9758] 2 20680f2 [0,0,0,-883,-9282] 4 20680f3 [0,0,0,-3083,55398] 2 20680f4 [0,0,0,997,-43498] 2
20680g (1 curve)	0	2- 5+ 11- 47-	2- -1 5+ -1 11-  4 -5  5
Curve Equation t 20680g1 [0,-1,0,-10656,-468500] 1

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

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