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
49.1-a4
49.1-a
$4$
$6$
\(\Q(\sqrt{53}) \)
$2$
$[2, 0]$
49.1
\( 7^{2} \)
\( 7^{3} \)
$1.72118$
$(-a-2), (-a+3)$
0
$\Z/6\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
$2, 3$
2B , 3B.1.1
$9$
\( 2 \)
$1$
$24.30385482$
1.669195602
\( \frac{167034552579}{49} a + \frac{524498013905}{49} \)
\( \bigl[a\) , \( -a + 1\) , \( a\) , \( 2 a - 21\) , \( 20 a - 85\bigr] \)
${y}^2+a{x}{y}+a{y}={x}^{3}+\left(-a+1\right){x}^{2}+\left(2a-21\right){x}+20a-85$
343.1-e4
343.1-e
$4$
$6$
\(\Q(\sqrt{53}) \)
$2$
$[2, 0]$
343.1
\( 7^{3} \)
\( 7^{9} \)
$2.79963$
$(-a-2), (-a+3)$
0
$\Z/2\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
$2, 3$
2B , 3B
$1$
\( 2^{3} \)
$1$
$2.411439358$
0.662473340
\( \frac{167034552579}{49} a + \frac{524498013905}{49} \)
\( \bigl[1\) , \( a + 1\) , \( 0\) , \( -16 a - 97\) , \( -151 a - 555\bigr] \)
${y}^2+{x}{y}={x}^{3}+\left(a+1\right){x}^{2}+\left(-16a-97\right){x}-151a-555$
343.2-d4
343.2-d
$4$
$6$
\(\Q(\sqrt{53}) \)
$2$
$[2, 0]$
343.2
\( 7^{3} \)
\( 7^{9} \)
$2.79963$
$(-a-2), (-a+3)$
0
$\Z/2\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
$2, 3$
2B , 3B
$1$
\( 2^{2} \)
$1$
$12.76327400$
1.753170515
\( \frac{167034552579}{49} a + \frac{524498013905}{49} \)
\( \bigl[a + 1\) , \( -a + 1\) , \( 1\) , \( 189 a - 787\) , \( -2042 a + 8454\bigr] \)
${y}^2+\left(a+1\right){x}{y}+{y}={x}^{3}+\left(-a+1\right){x}^{2}+\left(189a-787\right){x}-2042a+8454$
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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.