Cremona's table of elliptic curves

21620 = 2² · 5 · 23 · 47

Class	r	Atkin-Lehner	Eigenvalues
21620a (1 curve)	1	2- 5+ 23- 47+	2-  1 5+  1 -1 -1  0  7
Curve Equation t Generators 21620a1 [0,1,0,-101756,12445364] 1 [707:17158:1]
21620b (1 curve)	0	2- 5- 23- 47+	2-  2 5-  5  2  0 -7  4
Curve Equation t 21620b1 [0,-1,0,-3565,-80775] 1
21620c (1 curve)	2	2- 5- 23- 47+	2- -3 5- -3 -3  1  0 -3
Curve Equation t Generators 21620c1 [0,0,0,-3247,62614] 1 [-57:250:1]&[3:230:1]
21620d (1 curve)	1	2- 5- 23- 47-	2-  1 5- -5 -3  3  2  1
Curve Equation t Generators 21620d1 [0,1,0,-660,-2140] 1 [28:46:1]
21620e (1 curve)	1	2- 5- 23- 47-	2- -2 5-  1  2  4  5  0
Curve Equation t Generators 21620e1 [0,1,0,-17565,-4810865] 1 [28932:571849:64]

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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