Cremona's table of elliptic curves

Conductor 20405

20405 = 5 · 7 · 11 · 53



Isogeny classes of curves of conductor 20405 [newforms of level 20405]

Class r Atkin-Lehner Eigenvalues
20405a (1 curve) 0 5+ 7+ 11+ 53- -1  1 5+ 7+ 11+ -4  4  3
20405b (2 curves) 0 5- 7+ 11+ 53+  1  2 5- 7+ 11+ -2  2 -4
20405c (2 curves) 1 5- 7+ 11- 53+  1 -2 5- 7+ 11- -4 -4  0
20405d (2 curves) 1 5- 7- 11+ 53+  1  0 5- 7- 11+ -4  4  0


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

Part of Computational Number Theory
Back to Tables and computations