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
27500.3-o1
27500.3-o
$2$
$5$
\(\Q(\sqrt{-11}) \)
$2$
$[0, 1]$
27500.3
\( 2^{2} \cdot 5^{4} \cdot 11 \)
\( 2^{2} \cdot 5^{14} \cdot 11^{10} \)
$3.81652$
$(-a-1), (a-2), (-2a+1), (2)$
$1$
$\mathsf{trivial}$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
$5$
5B.1.3
$1$
\( 2^{3} \cdot 5 \)
$3.160732306$
$0.055045835$
8.393359421
\( -\frac{23178622194826561}{1610510} \)
\( \bigl[1\) , \( 0\) , \( 1\) , \( -148501\) , \( -22038602\bigr] \)
${y}^2+{x}{y}+{y}={x}^{3}-148501{x}-22038602$
220.2-c1
220.2-c
$2$
$5$
\(\Q(\sqrt{-55}) \)
$2$
$[0, 1]$
220.2
\( 2^{2} \cdot 5 \cdot 11 \)
\( 2^{2} \cdot 5^{14} \cdot 11^{10} \)
$2.55226$
$(2,a), (2,a+1), (5,a+2), (11,a+5)$
$1$
$\mathsf{trivial}$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
✓
$5$
5B.1.4
$1$
\( 2^{2} \cdot 5 \)
$0.690524660$
$0.275229175$
2.050134267
\( -\frac{23178622194826561}{1610510} \)
\( \bigl[1\) , \( 0\) , \( 1\) , \( -148501\) , \( -22038602\bigr] \)
${y}^2+{x}{y}+{y}={x}^3-148501{x}-22038602$
2420.1-b1
2420.1-b
$2$
$5$
\(\Q(\sqrt{5}) \)
$2$
$[2, 0]$
2420.1
\( 2^{2} \cdot 5 \cdot 11^{2} \)
\( 2^{2} \cdot 5^{2} \cdot 11^{10} \)
$1.40145$
$(-2a+1), (-3a+2), (-3a+1), (2)$
0
$\mathsf{trivial}$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
✓
✓
$5$
5B.1.4[2]
$1$
\( 2 \cdot 5^{2} \)
$1$
$0.073934157$
1.653218027
\( -\frac{23178622194826561}{1610510} \)
\( \bigl[1\) , \( 1\) , \( 1\) , \( -5940\) , \( -178685\bigr] \)
${y}^2+{x}{y}+{y}={x}^{3}+{x}^{2}-5940{x}-178685$
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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.