Cremona's table of elliptic curves

21805 = 5 · 7² · 89

Class	r	Atkin-Lehner	Eigenvalues
21805a (1 curve)	0	5+ 7+ 89-	-1  1 5+ 7+  5  5  4 -2
Curve Equation t 21805a1 [1,0,0,-146511,21570716] 1
21805b (1 curve)	0	5+ 7+ 89-	-1 -1 5+ 7+  1 -1  0  6
Curve Equation t 21805b1 [1,1,1,-736,-7596] 1
21805c (1 curve)	2	5+ 7- 89+	0  1 5+ 7- -3  1 -3 -8
Curve Equation t Generators 21805c1 [0,1,1,-191,970] 1 [-10:44:1]&[2:24:1]
21805d (1 curve)	1	5- 7- 89+	-1  1 5- 7-  1  1  0 -6
Curve Equation t Generators 21805d1 [1,0,0,-15,20] 1 [1:2:1]
21805e (1 curve)	1	5- 7- 89+	-1 -1 5- 7-  5 -5 -4  2
Curve Equation t Generators 21805e1 [1,1,1,-2990,-64170] 1 [-32:18:1]
21805f (1 curve)	1	5- 7- 89+	2  1 5- 7-  1  1 -3  0
Curve Equation t Generators 21805f1 [0,1,1,5080,-164951] 1 [298:2221:8]
21805g (1 curve)	0	5- 7- 89-	0 -1 5- 7- -3 -1  3  8
Curve Equation t 21805g1 [0,-1,1,-9375,-351534] 1
21805h (2 curves)	0	5- 7- 89-	1  0 5- 7-  0  4 -2 -6
Curve Equation t 21805h1 [1,-1,0,-167099,-11044832] 2 21805h2 [1,-1,0,598526,-84391707] 2
21805i (1 curve)	0	5- 7- 89-	1  0 5- 7-  3  4  1  3
Curve Equation t 21805i1 [1,-1,0,-254,1875] 1

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

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