Cremona's table of elliptic curves

Conductor 637

637 = 72 · 13

Isogeny classes of curves of conductor 637 [newforms of level 637]

Class r Atkin-Lehner Eigenvalues
637a (2 curves) 1 7+ 13+  1  0  0 7+ -3 13+  7 -7
637b (3 curves) 0 7- 13+  0  2  3 7-  0 13+  6  7
637c (2 curves) 1 7- 13-  1  0  0 7- -3 13- -7  7
637d (1 curve) 1 7- 13- -2  0  3 7- -6 13- -4 -5

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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