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
98.1-a3
98.1-a
$6$
$18$
\(\Q(\sqrt{-221}) \)
$2$
$[0, 1]$
98.1
\( 2 \cdot 7^{2} \)
\( 2^{12} \cdot 7^{6} \)
$8.35932$
$(2,a+1), (7)$
$0 \le r \le 2$
$\Z/6\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
✓
$2, 3$
2B , 3Cs.1.1
$16$
\( 2 \cdot 3 \)
$1$
$5.252502811$
0.471095432
\( \frac{9938375}{21952} \)
\( \bigl[1\) , \( 0\) , \( 1\) , \( 4\) , \( -6\bigr] \)
${y}^2+{x}{y}+{y}={x}^3+4{x}-6$
98.1-d3
98.1-d
$6$
$18$
\(\Q(\sqrt{-221}) \)
$2$
$[0, 1]$
98.1
\( 2 \cdot 7^{2} \)
\( 2^{12} \cdot 7^{6} \cdot 13^{12} \)
$8.35932$
$(2,a+1), (7)$
$2$
$\Z/2\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
✓
$2, 3$
2B , 3Cs
$1$
\( 2 \cdot 3 \)
$25.68064810$
$5.252502811$
27.22058104
\( \frac{9938375}{21952} \)
\( \bigl[a\) , \( 1\) , \( 0\) , \( 1738\) , \( -6148\bigr] \)
${y}^2+a{x}{y}={x}^3+{x}^2+1738{x}-6148$
98.1-e3
98.1-e
$6$
$18$
\(\Q(\sqrt{-221}) \)
$2$
$[0, 1]$
98.1
\( 2 \cdot 7^{2} \)
\( 2^{12} \cdot 7^{6} \cdot 13^{12} \)
$8.35932$
$(2,a+1), (7)$
$1$
$\Z/2\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
✓
$2, 3$
2B , 3Cs
$1$
\( 2^{2} \cdot 3^{2} \)
$1.687975075$
$5.252502811$
5.367582097
\( \frac{9938375}{21952} \)
\( \bigl[1\) , \( 0\) , \( 0\) , \( 757\) , \( -13391\bigr] \)
${y}^2+{x}{y}={x}^3+757{x}-13391$
98.1-h3
98.1-h
$6$
$18$
\(\Q(\sqrt{-221}) \)
$2$
$[0, 1]$
98.1
\( 2 \cdot 7^{2} \)
\( 2^{12} \cdot 7^{6} \)
$8.35932$
$(2,a+1), (7)$
$0 \le r \le 1$
$\Z/2\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
✓
$2, 3$
2B , 3Cs
\( 2^{2} \cdot 3^{2} \)
$1$
$5.252502811$
30.97512478
\( \frac{9938375}{21952} \)
\( \bigl[a\) , \( 1\) , \( a\) , \( 1096\) , \( -5933\bigr] \)
${y}^2+a{x}{y}+a{y}={x}^3+{x}^2+1096{x}-5933$
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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.