Cremona's table of elliptic curves

19747 = 7² · 13 · 31

Class	r	Atkin-Lehner	Eigenvalues
19747a (1 curve)	1	7+ 13+ 31+	-1  0 -4 7+  3 13+ -5 -5
Curve Equation t Generators 19747a1 [1,-1,1,-10912,596600] 1 [80:440:1]
19747b (2 curves)	0	7- 13- 31-	1  0  0 7-  0 13- -2 -4
Curve Equation t 19747b1 [1,-1,0,-10642,424647] 2 19747b2 [1,-1,0,-7457,681358] 2
19747c (1 curve)	0	7- 13- 31-	-1  0  4 7-  3 13-  5  5
Curve Equation t 19747c1 [1,-1,1,-223,-1676] 1
19747d (1 curve)	0	7- 13- 31-	2  0 -2 7- -3 13-  2  8
Curve Equation t 19747d1 [0,0,1,49,2315] 1

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

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