Properties

 Label 2.2.40.1-256.1-a Base field $$\Q(\sqrt{10})$$ Weight $[2, 2]$ Level norm $256$ Level $[256, 16, 16]$ Dimension $1$ CM no Base change yes

Related objects

Base field $$\Q(\sqrt{10})$$

Generator $$w$$, with minimal polynomial $$x^{2} - 10$$; narrow class number $$2$$ and class number $$2$$.

Form

 Weight: $[2, 2]$ Level: $[256, 16, 16]$ Dimension: $1$ CM: no Base change: yes Newspace dimension: $112$

Hecke eigenvalues ($q$-expansion)

The Hecke eigenvalue field is $\Q$.
Norm Prime Eigenvalue
2 $[2, 2, w]$ $\phantom{-}0$
3 $[3, 3, w + 1]$ $\phantom{-}2$
3 $[3, 3, w + 2]$ $\phantom{-}2$
5 $[5, 5, w]$ $-2$
13 $[13, 13, w + 6]$ $-2$
13 $[13, 13, w + 7]$ $-2$
31 $[31, 31, -2w + 3]$ $\phantom{-}0$
31 $[31, 31, 2w + 3]$ $\phantom{-}0$
37 $[37, 37, w + 11]$ $-10$
37 $[37, 37, w + 26]$ $-10$
41 $[41, 41, 3w + 7]$ $-6$
41 $[41, 41, -3w + 7]$ $-6$
43 $[43, 43, w + 15]$ $\phantom{-}6$
43 $[43, 43, w + 28]$ $\phantom{-}6$
49 $[49, 7, -7]$ $\phantom{-}2$
53 $[53, 53, w + 13]$ $\phantom{-}6$
53 $[53, 53, w + 40]$ $\phantom{-}6$
67 $[67, 67, w + 12]$ $\phantom{-}10$
67 $[67, 67, w + 55]$ $\phantom{-}10$
71 $[71, 71, -w - 9]$ $-12$
 Display number of eigenvalues

Atkin-Lehner eigenvalues

Norm Prime Eigenvalue
$2$ $[2, 2, w]$ $-1$