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
4.1-a1
4.1-a
$1$
$1$
\(\Q(\sqrt{173}) \)
$2$
$[2, 0]$
4.1
\( 2^{2} \)
\( 2^{6} \)
$1.66217$
$(2)$
$1$
$\mathsf{trivial}$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
$1$
\( 3 \)
$0.321558588$
$18.56376528$
2.723042259
\( \frac{8266131}{8} a + \frac{12564855}{2} \)
\( \bigl[a + 1\) , \( 1\) , \( a\) , \( a + 9\) , \( -23 a - 134\bigr] \)
${y}^2+\left(a+1\right){x}{y}+a{y}={x}^{3}+{x}^{2}+\left(a+9\right){x}-23a-134$
4.1-b1
4.1-b
$2$
$5$
\(\Q(\sqrt{173}) \)
$2$
$[2, 0]$
4.1
\( 2^{2} \)
\( 2^{2} \)
$1.66217$
$(2)$
0
$\Z/5\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
$5$
5B.1.1
$9$
\( 1 \)
$1$
$65.53394125$
1.793683184
\( \frac{24389}{2} \)
\( \bigl[a\) , \( a - 1\) , \( a\) , \( 16 a - 23\) , \( -5 a + 261\bigr] \)
${y}^2+a{x}{y}+a{y}={x}^{3}+\left(a-1\right){x}^{2}+\left(16a-23\right){x}-5a+261$
4.1-b2
4.1-b
$2$
$5$
\(\Q(\sqrt{173}) \)
$2$
$[2, 0]$
4.1
\( 2^{2} \)
\( 2^{10} \)
$1.66217$
$(2)$
0
$\mathsf{trivial}$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
$5$
5B.1.2
$9$
\( 1 \)
$1$
$2.621357650$
1.793683184
\( \frac{47792627189}{32} \)
\( \bigl[a\) , \( a - 1\) , \( a\) , \( 991 a - 6923\) , \( 43738 a - 309288\bigr] \)
${y}^2+a{x}{y}+a{y}={x}^{3}+\left(a-1\right){x}^{2}+\left(991a-6923\right){x}+43738a-309288$
4.1-c1
4.1-c
$1$
$1$
\(\Q(\sqrt{173}) \)
$2$
$[2, 0]$
4.1
\( 2^{2} \)
\( 2^{6} \)
$1.66217$
$(2)$
$1$
$\mathsf{trivial}$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
$1$
\( 3 \)
$0.321558588$
$18.56376528$
2.723042259
\( -\frac{8266131}{8} a + \frac{58525551}{8} \)
\( \bigl[a\) , \( -a - 1\) , \( 1\) , \( -a + 10\) , \( 24 a - 167\bigr] \)
${y}^2+a{x}{y}+{y}={x}^{3}+\left(-a-1\right){x}^{2}+\left(-a+10\right){x}+24a-167$
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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.