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
52.1-b1
52.1-b
$2$
$7$
\(\Q(\sqrt{13}) \)
$2$
$[2, 0]$
52.1
\( 2^{2} \cdot 13 \)
\( 2^{2} \cdot 13^{14} \)
$0.86519$
$(-2a+1), (2)$
$1$
$\mathsf{trivial}$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
✓
$7$
7B.1.3
$1$
\( 2 \)
$1.383448027$
$0.385597965$
0.591814903
\( -\frac{1064019559329}{125497034} \)
\( \bigl[1\) , \( -1\) , \( 1\) , \( -213\) , \( -1257\bigr] \)
${y}^2+{x}{y}+{y}={x}^{3}-{x}^{2}-213{x}-1257$
468.2-c1
468.2-c
$2$
$7$
\(\Q(\sqrt{13}) \)
$2$
$[2, 0]$
468.2
\( 2^{2} \cdot 3^{2} \cdot 13 \)
\( 2^{2} \cdot 3^{6} \cdot 13^{14} \)
$1.49855$
$(-a+1), (-2a+1), (2)$
0
$\mathsf{trivial}$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
$7$
7B.6.3
$1$
\( 2 \cdot 7 \)
$1$
$0.646780683$
2.511385605
\( -\frac{1064019559329}{125497034} \)
\( \bigl[a\) , \( -a\) , \( 1\) , \( 212 a - 850\) , \( -5027 a + 8797\bigr] \)
${y}^2+a{x}{y}+{y}={x}^{3}-a{x}^{2}+\left(212a-850\right){x}-5027a+8797$
468.3-c1
468.3-c
$2$
$7$
\(\Q(\sqrt{13}) \)
$2$
$[2, 0]$
468.3
\( 2^{2} \cdot 3^{2} \cdot 13 \)
\( 2^{2} \cdot 3^{6} \cdot 13^{14} \)
$1.49855$
$(-a), (-2a+1), (2)$
0
$\mathsf{trivial}$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
$7$
7B.6.3
$1$
\( 2 \cdot 7 \)
$1$
$0.646780683$
2.511385605
\( -\frac{1064019559329}{125497034} \)
\( \bigl[a + 1\) , \( -1\) , \( 1\) , \( -213 a - 638\) , \( 5027 a + 3770\bigr] \)
${y}^2+\left(a+1\right){x}{y}+{y}={x}^{3}-{x}^{2}+\left(-213a-638\right){x}+5027a+3770$
676.1-a1
676.1-a
$2$
$7$
\(\Q(\sqrt{13}) \)
$2$
$[2, 0]$
676.1
\( 2^{2} \cdot 13^{2} \)
\( 2^{2} \cdot 13^{20} \)
$1.64285$
$(-2a+1), (2)$
0
$\mathsf{trivial}$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
$7$
7B.6.3
$1$
\( 2 \)
$1$
$0.902669830$
0.500711131
\( -\frac{1064019559329}{125497034} \)
\( \bigl[a + 1\) , \( -1\) , \( 0\) , \( 8295 a - 19354\) , \( -615801 a + 1419610\bigr] \)
${y}^2+\left(a+1\right){x}{y}={x}^{3}-{x}^{2}+\left(8295a-19354\right){x}-615801a+1419610$
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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.