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
686.2-c2
686.2-c
$2$
$3$
\(\Q(\sqrt{2}) \)
$2$
$[2, 0]$
686.2
\( 2 \cdot 7^{3} \)
\( 2^{6} \cdot 7^{3} \)
$1.29349$
$(a), (-2a+1), (2a+1)$
$1$
$\mathsf{trivial}$
$\textsf{no}$
$\mathrm{SU}(2)$
$3$
3B
$1$
\( 2 \)
$0.041738732$
$24.65757654$
1.455474647
\( \frac{208183}{56} a - \frac{292563}{56} \)
\( \bigl[1\) , \( -a\) , \( a + 1\) , \( 0\) , \( 0\bigr] \)
${y}^2+{x}{y}+\left(a+1\right){y}={x}^{3}-a{x}^{2}$
686.2-e2
686.2-e
$2$
$3$
\(\Q(\sqrt{2}) \)
$2$
$[2, 0]$
686.2
\( 2 \cdot 7^{3} \)
\( 2^{6} \cdot 7^{9} \)
$1.29349$
$(a), (-2a+1), (2a+1)$
0
$\Z/3\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
$3$
3B.1.1
$1$
\( 2 \cdot 3^{2} \)
$1$
$3.139999973$
2.220315274
\( \frac{208183}{56} a - \frac{292563}{56} \)
\( \bigl[a + 1\) , \( a + 1\) , \( 1\) , \( 8 a - 5\) , \( 15 a - 5\bigr] \)
${y}^2+\left(a+1\right){x}{y}+{y}={x}^{3}+\left(a+1\right){x}^{2}+\left(8a-5\right){x}+15a-5$
4802.1-w2
4802.1-w
$2$
$3$
\(\Q(\sqrt{2}) \)
$2$
$[2, 0]$
4802.1
\( 2 \cdot 7^{4} \)
\( 2^{6} \cdot 7^{15} \)
$2.10397$
$(a), (-2a+1), (2a+1)$
$1$
$\mathsf{trivial}$
$\textsf{no}$
$\mathrm{SU}(2)$
$3$
3B
$1$
\( 2^{2} \)
$1.138331575$
$0.760281635$
2.447869585
\( \frac{208183}{56} a - \frac{292563}{56} \)
\( \bigl[1\) , \( a + 1\) , \( a\) , \( 33 a - 8\) , \( -148 a - 378\bigr] \)
${y}^2+{x}{y}+a{y}={x}^{3}+\left(a+1\right){x}^{2}+\left(33a-8\right){x}-148a-378$
4802.1-bd2
4802.1-bd
$2$
$3$
\(\Q(\sqrt{2}) \)
$2$
$[2, 0]$
4802.1
\( 2 \cdot 7^{4} \)
\( 2^{6} \cdot 7^{9} \)
$2.10397$
$(a), (-2a+1), (2a+1)$
$1$
$\mathsf{trivial}$
$\textsf{no}$
$\mathrm{SU}(2)$
$3$
3B
$1$
\( 2^{3} \cdot 3 \)
$0.048504617$
$5.970287511$
4.914446106
\( \frac{208183}{56} a - \frac{292563}{56} \)
\( \bigl[a + 1\) , \( 0\) , \( a\) , \( 5 a + 3\) , \( -35 a - 47\bigr] \)
${y}^2+\left(a+1\right){x}{y}+a{y}={x}^{3}+\left(5a+3\right){x}-35a-47$
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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.