Cremona's table of elliptic curves

2820 = 2² · 3 · 5 · 47

Class	r	Atkin-Lehner	Eigenvalues
2820a (1 curve)	1	2- 3+ 5- 47+	2- 3+ 5-  1  4 -3 -3 -5
Curve Equation t Generators 2820a1 [0,-1,0,-220,1432] 1 [-6:50:1]
2820b (1 curve)	1	2- 3+ 5- 47+	2- 3+ 5-  1 -4  1 -7  7
Curve Equation t Generators 2820b1 [0,-1,0,-62380,-5976008] 1 [1842:78266:1]
2820c (1 curve)	1	2- 3+ 5- 47+	2- 3+ 5- -2  2 -5  2 -2
Curve Equation t Generators 2820c1 [0,-1,0,955,37857] 1 [119:-1350:1]
2820d (1 curve)	1	2- 3- 5+ 47+	2- 3- 5+ -1  0  1 -1 -7
Curve Equation t Generators 2820d1 [0,1,0,4,-60] 1 [4:6:1]
2820e (2 curves)	1	2- 3- 5+ 47+	2- 3- 5+ -1  0 -1 -3 -1
Curve Equation t Generators 2820e1 [0,1,0,6004,135780] 3 [-20:90:1] 2820e2 [0,1,0,-62036,-8056236] 1 [331:2790:1]
2820f (2 curves)	0	2- 3- 5- 47+	2- 3- 5-  0  0  4  0  6
Curve Equation t 2820f1 [0,1,0,-45,-132] 2 2820f2 [0,1,0,-20,-252] 2

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

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