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
100156.3-d2
100156.3-d
$4$
$6$
\(\Q(\sqrt{-3}) \)
$2$
$[0, 1]$
100156.3
\( 2^{2} \cdot 7^{3} \cdot 73 \)
\( 2^{6} \cdot 7^{11} \cdot 73^{6} \)
$2.75339$
$(-3a+1), (3a-2), (-9a+1), (2)$
0
$\Z/2\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
$2, 3$
2B , 3B[2]
$4$
\( 2^{3} \)
$1$
$0.189118281$
1.746999853
\( \frac{1454621964199278075}{1453413909279556} a + \frac{3568835637322210611}{2906827818559112} \)
\( \bigl[1\) , \( a\) , \( 1\) , \( 989 a + 539\) , \( 309 a - 12817\bigr] \)
${y}^2+{x}{y}+{y}={x}^{3}+a{x}^{2}+\left(989a+539\right){x}+309a-12817$
100156.5-c2
100156.5-c
$4$
$6$
\(\Q(\sqrt{-3}) \)
$2$
$[0, 1]$
100156.5
\( 2^{2} \cdot 7^{3} \cdot 73 \)
\( 2^{6} \cdot 7^{11} \cdot 73^{6} \)
$2.75339$
$(-3a+1), (3a-2), (-9a+1), (2)$
$1$
$\Z/2\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
$2, 3$
2B , 3B[2]
$1$
\( 2^{3} \cdot 3 \)
$1.173590937$
$0.189118281$
3.075394794
\( \frac{1454621964199278075}{1453413909279556} a + \frac{3568835637322210611}{2906827818559112} \)
\( \bigl[a + 1\) , \( -a - 1\) , \( 1\) , \( -929 a + 1539\) , \( -13161 a + 1058\bigr] \)
${y}^2+\left(a+1\right){x}{y}+{y}={x}^{3}+\left(-a-1\right){x}^{2}+\left(-929a+1539\right){x}-13161a+1058$
128772.3-e2
128772.3-e
$4$
$6$
\(\Q(\sqrt{-3}) \)
$2$
$[0, 1]$
128772.3
\( 2^{2} \cdot 3^{2} \cdot 7^{2} \cdot 73 \)
\( 2^{6} \cdot 3^{6} \cdot 7^{5} \cdot 73^{6} \)
$2.93194$
$(-2a+1), (-3a+1), (3a-2), (-9a+1), (2)$
0
$\Z/6\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
$2, 3$
2B , 3B.1.1[2]
$1$
\( 2^{5} \cdot 3^{2} \)
$1$
$0.288882946$
2.668586355
\( \frac{1454621964199278075}{1453413909279556} a + \frac{3568835637322210611}{2906827818559112} \)
\( \bigl[a\) , \( -a + 1\) , \( 1\) , \( -17 a - 567\) , \( -2142 a - 1960\bigr] \)
${y}^2+a{x}{y}+{y}={x}^{3}+\left(-a+1\right){x}^{2}+\left(-17a-567\right){x}-2142a-1960$
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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.