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
24.1-a5
24.1-a
$6$
$8$
\(\Q(\sqrt{-129}) \)
$2$
$[0, 1]$
24.1
\( 2^{3} \cdot 3 \)
\( 2^{20} \cdot 3^{2} \)
$4.49279$
$(2,a+1), (3,a)$
$1$
$\Z/4\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
$2$
2Cs
$1$
\( 2^{2} \)
$16.62854488$
$7.270694035$
2.661186243
\( \frac{28756228}{3} \)
\( \bigl[0\) , \( -1\) , \( 0\) , \( -64\) , \( 220\bigr] \)
${y}^2={x}^3-{x}^2-64{x}+220$
24.1-b5
24.1-b
$6$
$8$
\(\Q(\sqrt{-129}) \)
$2$
$[0, 1]$
24.1
\( 2^{3} \cdot 3 \)
\( 2^{8} \cdot 3^{2} \cdot 23^{12} \)
$4.49279$
$(2,a+1), (3,a)$
0
$\Z/2\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
$2$
2Cs
$1$
\( 2^{3} \)
$1$
$7.270694035$
0.640148915
\( \frac{28756228}{3} \)
\( \bigl[a + 1\) , \( 1\) , \( 0\) , \( 633 a - 4049\) , \( -33908 a + 36669\bigr] \)
${y}^2+\left(a+1\right){x}{y}={x}^3+{x}^2+\left(633a-4049\right){x}-33908a+36669$
24.1-c5
24.1-c
$6$
$8$
\(\Q(\sqrt{-129}) \)
$2$
$[0, 1]$
24.1
\( 2^{3} \cdot 3 \)
\( 2^{20} \cdot 3^{2} \)
$4.49279$
$(2,a+1), (3,a)$
0
$\Z/2\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
$2$
2Cs
$4$
\( 2^{2} \)
$1$
$7.270694035$
1.280297830
\( \frac{28756228}{3} \)
\( \bigl[0\) , \( 1\) , \( 0\) , \( -64\) , \( -220\bigr] \)
${y}^2={x}^3+{x}^2-64{x}-220$
24.1-d5
24.1-d
$6$
$8$
\(\Q(\sqrt{-129}) \)
$2$
$[0, 1]$
24.1
\( 2^{3} \cdot 3 \)
\( 2^{8} \cdot 3^{2} \cdot 23^{12} \)
$4.49279$
$(2,a+1), (3,a)$
$0 \le r \le 1$
$\Z/4\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
$2$
2Cs
\( 2^{3} \)
$1$
$7.270694035$
11.39152378
\( \frac{28756228}{3} \)
\( \bigl[a + 1\) , \( -a\) , \( a + 1\) , \( 653 a - 3964\) , \( 20394 a + 52802\bigr] \)
${y}^2+\left(a+1\right){x}{y}+\left(a+1\right){y}={x}^3-a{x}^2+\left(653a-3964\right){x}+20394a+52802$
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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.