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
1089.2-a4
1089.2-a
$4$
$4$
\(\Q(\sqrt{-7}) \)
$2$
$[0, 1]$
1089.2
\( 3^{2} \cdot 11^{2} \)
\( 3^{6} \cdot 11^{8} \)
$1.35814$
$(-2a+3), (2a+1), (3)$
0
$\Z/4\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
✓
$2$
2B
$1$
\( 2^{4} \cdot 3 \)
$1$
$1.025585977$
2.325810380
\( \frac{347873904937}{395307} \)
\( \bigl[1\) , \( 1\) , \( 0\) , \( -146\) , \( 621\bigr] \)
${y}^2+{x}{y}={x}^{3}+{x}^{2}-146{x}+621$
9801.2-b4
9801.2-b
$4$
$4$
\(\Q(\sqrt{-7}) \)
$2$
$[0, 1]$
9801.2
\( 3^{4} \cdot 11^{2} \)
\( 3^{18} \cdot 11^{8} \)
$2.35237$
$(-2a+3), (2a+1), (3)$
$1$
$\Z/2\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
$2$
2B
$1$
\( 2^{4} \)
$0.759802923$
$0.341861992$
1.570806691
\( \frac{347873904937}{395307} \)
\( \bigl[1\) , \( -1\) , \( 1\) , \( -1319\) , \( -18084\bigr] \)
${y}^2+{x}{y}+{y}={x}^{3}-{x}^{2}-1319{x}-18084$
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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.