Label
Class
Class size
Class degree
Base field
Field degree
Field signature
Conductor
Conductor norm
Discriminant norm
Root analytic conductor
Bad primes
Rank
Torsion
CM
CM
Sato-Tate
$\Q$-curve
Base change
Semistable
Potentially good
Nonmax $\ell$
mod-$\ell$ images
$Ш_{\textrm{an}}$
Tamagawa
Regulator
Period
Leading coeff
j-invariant
Weierstrass coefficients
Weierstrass equation
33.1-a4
33.1-a
$4$
$4$
\(\Q(\sqrt{165}) \)
$2$
$[2, 0]$
33.1
\( 3 \cdot 11 \)
\( 3^{6} \cdot 11^{8} \)
$2.75112$
$(3,a+1), (a+5)$
$1$
$\Z/4\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
✓
$2$
2B
$1$
\( 2^{4} \)
$2.146444646$
$8.936252827$
2.986504436
\( \frac{347873904937}{395307} \)
\( \bigl[1\) , \( 1\) , \( 0\) , \( -146\) , \( 621\bigr] \)
${y}^2+{x}{y}={x}^{3}+{x}^{2}-146{x}+621$
33.1-b4
33.1-b
$4$
$4$
\(\Q(\sqrt{165}) \)
$2$
$[2, 0]$
33.1
\( 3 \cdot 11 \)
\( 3^{18} \cdot 11^{8} \)
$2.75112$
$(3,a+1), (a+5)$
$1$
$\Z/2\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
✓
$2$
2B
$1$
\( 2^{2} \cdot 3 \)
$6.147048426$
$1.883253066$
5.407351434
\( \frac{347873904937}{395307} \)
\( \bigl[1\) , \( -1\) , \( 1\) , \( -1319\) , \( -18084\bigr] \)
${y}^2+{x}{y}+{y}={x}^{3}-{x}^{2}-1319{x}-18084$
33.1-c4
33.1-c
$4$
$4$
\(\Q(\sqrt{165}) \)
$2$
$[2, 0]$
33.1
\( 3 \cdot 11 \)
\( 3^{6} \cdot 11^{8} \)
$2.75112$
$(3,a+1), (a+5)$
0
$\Z/2\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
✓
$2$
2B
$4$
\( 2^{2} \)
$1$
$1.883253066$
0.586444209
\( \frac{347873904937}{395307} \)
\( \bigl[a\) , \( a - 1\) , \( 0\) , \( 1913 a - 13137\) , \( 115761 a - 801162\bigr] \)
${y}^2+a{x}{y}={x}^{3}+\left(a-1\right){x}^{2}+\left(1913a-13137\right){x}+115761a-801162$
33.1-d4
33.1-d
$4$
$4$
\(\Q(\sqrt{165}) \)
$2$
$[2, 0]$
33.1
\( 3 \cdot 11 \)
\( 3^{18} \cdot 11^{8} \)
$2.75112$
$(3,a+1), (a+5)$
$2$
$\Z/2\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
✓
$2$
2B
$1$
\( 2^{4} \cdot 3 \)
$0.157947687$
$8.936252827$
5.274338318
\( \frac{347873904937}{395307} \)
\( \bigl[a\) , \( -a + 1\) , \( 1\) , \( 17137 a - 118632\) , \( -3003792 a + 20794100\bigr] \)
${y}^2+a{x}{y}+{y}={x}^{3}+\left(-a+1\right){x}^{2}+\left(17137a-118632\right){x}-3003792a+20794100$
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*The rank, regulator and analytic order of Ш are
not known for all curves in the database; curves for which these are
unknown will not appear in searches specifying one of these
quantities.