Properties

Label 2.2.220.1-9.2-a
Base field \(\Q(\sqrt{55}) \)
Weight $[2, 2]$
Level norm $9$
Level $[9, 9, -w + 8]$
Dimension $2$
CM yes
Base change no

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Base field \(\Q(\sqrt{55}) \)

Generator \(w\), with minimal polynomial \(x^{2} - 55\); narrow class number \(4\) and class number \(2\).

Form

Weight: $[2, 2]$
Level: $[9, 9, -w + 8]$
Dimension: $2$
CM: yes
Base change: no
Newspace dimension: $68$

Hecke eigenvalues ($q$-expansion)

The Hecke eigenvalue field is $\Q(e)$ where $e$ is a root of the defining polynomial:

\(x^{2} - 2\)

  Show full eigenvalues   Hide large eigenvalues

Norm Prime Eigenvalue
2 $[2, 2, w + 1]$ $\phantom{-}0$
3 $[3, 3, w + 1]$ $\phantom{-}0$
3 $[3, 3, w + 2]$ $\phantom{-}e$
5 $[5, 5, -2w + 15]$ $\phantom{-}0$
11 $[11, 11, 3w - 22]$ $\phantom{-}0$
13 $[13, 13, w + 4]$ $\phantom{-}0$
13 $[13, 13, w + 9]$ $\phantom{-}0$
17 $[17, 17, w + 2]$ $\phantom{-}0$
17 $[17, 17, w + 15]$ $\phantom{-}0$
19 $[19, 19, -w - 6]$ $\phantom{-}0$
19 $[19, 19, w - 6]$ $\phantom{-}0$
23 $[23, 23, w + 3]$ $-e$
23 $[23, 23, w + 20]$ $\phantom{-}e$
47 $[47, 47, w + 14]$ $-7e$
47 $[47, 47, w + 33]$ $\phantom{-}7e$
49 $[49, 7, -7]$ $\phantom{-}4$
67 $[67, 67, w + 16]$ $\phantom{-}3e$
67 $[67, 67, w + 51]$ $\phantom{-}3e$
73 $[73, 73, w + 36]$ $\phantom{-}0$
73 $[73, 73, w + 37]$ $\phantom{-}0$
Display number of eigenvalues

Atkin-Lehner eigenvalues

Norm Prime Eigenvalue
$3$ $[3, 3, w + 1]$ $-1$