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
72.1-a6
72.1-a
$6$
$8$
\(\Q(\sqrt{19}) \)
$2$
$[2, 0]$
72.1
\( 2^{3} \cdot 3^{2} \)
\( 2^{10} \cdot 3^{4} \)
$2.26923$
$(-3a+13), (-a-4), (-a+4)$
0
$\Z/2\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
$2$
2B
$1$
\( 2^{3} \)
$1$
$2.325279868$
0.533455787
\( \frac{3065617154}{9} \)
\( \bigl[a + 1\) , \( a\) , \( a + 1\) , \( 1274069 a - 5553508\) , \( 1633669294 a - 7120999310\bigr] \)
${y}^2+\left(a+1\right){x}{y}+\left(a+1\right){y}={x}^{3}+a{x}^{2}+\left(1274069a-5553508\right){x}+1633669294a-7120999310$
72.1-j6
72.1-j
$6$
$8$
\(\Q(\sqrt{19}) \)
$2$
$[2, 0]$
72.1
\( 2^{3} \cdot 3^{2} \)
\( 2^{10} \cdot 3^{4} \)
$2.26923$
$(-3a+13), (-a-4), (-a+4)$
$1$
$\Z/4\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
$2$
2B
$1$
\( 2^{3} \)
$1.562595083$
$22.73403407$
4.074892574
\( \frac{3065617154}{9} \)
\( \bigl[a + 1\) , \( a - 1\) , \( a + 1\) , \( 1274068 a - 5553511\) , \( -1635400609 a + 7128546023\bigr] \)
${y}^2+\left(a+1\right){x}{y}+\left(a+1\right){y}={x}^{3}+\left(a-1\right){x}^{2}+\left(1274068a-5553511\right){x}-1635400609a+7128546023$
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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.