William Stein's table of weight 2 newforms
Level 21
21 = 3 · 7
Galois conjugacy classes of newforms of level 21
[elliptic curves of conductor 21]
Class
L
Sign
Degree
Atkin-Lehner
Traces of eigenvalues
21A
+
1
3
-
7
+
-1
1
-2
-1
4
-2
-6
4
Data from
The Modular Forms Database
by William Stein.
Design inspired by
The Modular Forms Explorer
by William Stein.
Part of
Computational Number Theory
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Tables and computations