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
28.2-a4
28.2-a
$6$
$18$
\(\Q(\sqrt{-455}) \)
$2$
$[0, 1]$
28.2
\( 2^{2} \cdot 7 \)
\( 2^{6} \cdot 7^{12} \)
$4.38464$
$(2,a), (2,a+1), (7,a+3)$
0
$\Z/6\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
✓
$2, 3$
2B , 3Cs.1.1
$4$
\( 2^{2} \cdot 3 \)
$1$
$1.313125702$
0.164160753
\( \frac{4956477625}{941192} \)
\( \bigl[1\) , \( 0\) , \( 1\) , \( -36\) , \( -70\bigr] \)
${y}^2+{x}{y}+{y}={x}^3-36{x}-70$
28.2-b4
28.2-b
$6$
$18$
\(\Q(\sqrt{-455}) \)
$2$
$[0, 1]$
28.2
\( 2^{2} \cdot 7 \)
\( 2^{6} \cdot 7^{24} \)
$4.38464$
$(2,a), (2,a+1), (7,a+3)$
0
$\Z/2\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
✓
$2, 3$
2B , 3Cs
$4$
\( 2^{2} \cdot 3 \)
$1$
$1.313125702$
1.477446779
\( \frac{4956477625}{941192} \)
\( \bigl[1\) , \( 1\) , \( 0\) , \( -1740\) , \( 22184\bigr] \)
${y}^2+{x}{y}={x}^3+{x}^2-1740{x}+22184$
28.2-c4
28.2-c
$6$
$18$
\(\Q(\sqrt{-455}) \)
$2$
$[0, 1]$
28.2
\( 2^{2} \cdot 7 \)
\( 2^{6} \cdot 7^{12} \cdot 13^{12} \)
$4.38464$
$(2,a), (2,a+1), (7,a+3)$
$1$
$\Z/2\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
✓
$2, 3$
2B , 3Cs
$4$
\( 2 \cdot 3^{2} \)
$1.250832530$
$1.313125702$
5.544115479
\( \frac{4956477625}{941192} \)
\( \bigl[1\) , \( 0\) , \( 0\) , \( -6003\) , \( -147239\bigr] \)
${y}^2+{x}{y}={x}^3-6003{x}-147239$
28.2-d4
28.2-d
$6$
$18$
\(\Q(\sqrt{-455}) \)
$2$
$[0, 1]$
28.2
\( 2^{2} \cdot 7 \)
\( 2^{6} \cdot 5^{12} \cdot 7^{12} \)
$4.38464$
$(2,a), (2,a+1), (7,a+3)$
$0 \le r \le 1$
$\Z/2\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
✓
$2, 3$
2B , 3Cs
\( 2 \cdot 3^{2} \)
$1$
$1.313125702$
27.27098848
\( \frac{4956477625}{941192} \)
\( \bigl[1\) , \( 1\) , \( 1\) , \( -888\) , \( -8719\bigr] \)
${y}^2+{x}{y}+{y}={x}^3+{x}^2-888{x}-8719$
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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.