William Stein's table of weight 2 newforms

Level 342

342 = 2 · 32 · 19

Galois conjugacy classes of newforms of level 342 [elliptic curves of conductor 342]

Class L Sign Degree Atkin-Lehner Traces of eigenvalues
342A - 1 2+ 3+ 19+  -1   0  -2   0  -2  -4   0  -1
342B + 1 2+ 3- 19+  -1   0  -2   0   4   2   6  -1
342D + 1 2+ 3- 19+  -1   0   4   3  -2  -1  -3  -1
342C - 1 2+ 3- 19-  -1   0   0  -4   0  -4  -6   1
342G + 1 2- 3+ 19+   1   0   2   0   2  -4   0  -1
342E + 1 2- 3- 19-   1   0   0  -1   6   5  -3   1
342F + 1 2- 3- 19-   1   0   0   4  -4   0   2   1

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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