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
7168.6-b4
7168.6-b
$4$
$4$
\(\Q(\sqrt{-7}) \)
$2$
$[0, 1]$
7168.6
\( 2^{10} \cdot 7 \)
\( 2^{18} \cdot 7^{4} \)
$2.17539$
$(a), (-a+1), (-2a+1)$
0
$\Z/2\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
$2$
2B
$1$
\( 2^{2} \)
$1$
$2.495279627$
1.886254098
\( \frac{125000}{49} \)
\( \bigl[0\) , \( -1\) , \( 0\) , \( -8\) , \( 8\bigr] \)
${y}^2={x}^{3}-{x}^{2}-8{x}+8$
224.1-b2
224.1-b
$2$
$2$
\(\Q(\sqrt{-14}) \)
$2$
$[0, 1]$
224.1
\( 2^{5} \cdot 7 \)
\( 2^{6} \cdot 7^{4} \)
$2.58699$
$(2,a), (7,a)$
$1$
$\Z/2\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
$2$
2B
$1$
\( 2^{3} \)
$0.306002722$
$4.990559254$
1.632564997
\( \frac{125000}{49} \)
\( \bigl[a\) , \( 0\) , \( a\) , \( 9\) , \( 5\bigr] \)
${y}^2+a{x}{y}+a{y}={x}^3+9{x}+5$
448.1-b2
448.1-b
$2$
$2$
\(\Q(\sqrt{-21}) \)
$2$
$[0, 1]$
448.1
\( 2^{6} \cdot 7 \)
\( 2^{6} \cdot 5^{12} \cdot 7^{4} \)
$3.76789$
$(2,a+1), (7,a)$
$1$
$\Z/2\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
$2$
2B
$4$
\( 2 \)
$0.755870701$
$4.990559254$
3.292661398
\( \frac{125000}{49} \)
\( \bigl[a + 1\) , \( -a\) , \( 0\) , \( 10 a + 42\) , \( -27 a + 46\bigr] \)
${y}^2+\left(a+1\right){x}{y}={x}^3-a{x}^2+\left(10a+42\right){x}-27a+46$
448.1-b2
448.1-b
$2$
$2$
\(\Q(\sqrt{7}) \)
$2$
$[2, 0]$
448.1
\( 2^{6} \cdot 7 \)
\( 2^{6} \cdot 7^{4} \)
$2.17539$
$(a+3), (a)$
$1$
$\Z/2\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
$2$
2B
$1$
\( 2 \)
$0.393548229$
$16.88594825$
1.255869176
\( \frac{125000}{49} \)
\( \bigl[a + 1\) , \( a - 1\) , \( a + 1\) , \( -100 a - 263\) , \( -668 a - 1769\bigr] \)
${y}^2+\left(a+1\right){x}{y}+\left(a+1\right){y}={x}^{3}+\left(a-1\right){x}^{2}+\left(-100a-263\right){x}-668a-1769$
224.1-c2
224.1-c
$2$
$2$
\(\Q(\sqrt{14}) \)
$2$
$[2, 0]$
224.1
\( 2^{5} \cdot 7 \)
\( 2^{6} \cdot 7^{4} \)
$2.58699$
$(-a+4), (-2a+7)$
0
$\Z/2\Z$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
$2$
2B
$1$
\( 2^{2} \)
$1$
$16.88594825$
2.256479750
\( \frac{125000}{49} \)
\( \bigl[a\) , \( 0\) , \( a\) , \( -5\) , \( -5\bigr] \)
${y}^2+a{x}{y}+a{y}={x}^{3}-5{x}-5$
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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.