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
25.3-a1
25.3-a
$2$
$3$
4.4.4525.1
$4$
$[4, 0]$
25.3
\( 5^{2} \)
\( - 5^{10} \)
$8.98856$
$(-1/3a^3-2/3a^2+4/3a+1)$
0
$\mathsf{trivial}$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
$3$
3B
$1$
\( 1 \)
$1$
$108.7523764$
1.616700096
\( -\frac{13556}{3} a^{3} + \frac{1736}{3} a^{2} + \frac{77018}{3} a + 12361 \)
\( \bigl[\frac{1}{3} a^{3} - \frac{1}{3} a^{2} - \frac{4}{3} a\) , \( a^{2} - 5\) , \( \frac{1}{3} a^{3} - \frac{1}{3} a^{2} - \frac{1}{3} a\) , \( -\frac{7}{3} a^{3} + \frac{19}{3} a^{2} + \frac{13}{3} a - 11\) , \( -\frac{1}{3} a^{3} + \frac{1}{3} a^{2} + \frac{4}{3} a - 2\bigr] \)
${y}^2+\left(\frac{1}{3}a^{3}-\frac{1}{3}a^{2}-\frac{4}{3}a\right){x}{y}+\left(\frac{1}{3}a^{3}-\frac{1}{3}a^{2}-\frac{1}{3}a\right){y}={x}^{3}+\left(a^{2}-5\right){x}^{2}+\left(-\frac{7}{3}a^{3}+\frac{19}{3}a^{2}+\frac{13}{3}a-11\right){x}-\frac{1}{3}a^{3}+\frac{1}{3}a^{2}+\frac{4}{3}a-2$
25.3-a2
25.3-a
$2$
$3$
4.4.4525.1
$4$
$[4, 0]$
25.3
\( 5^{2} \)
\( - 5^{10} \)
$8.98856$
$(-1/3a^3-2/3a^2+4/3a+1)$
0
$\mathsf{trivial}$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
$3$
3B
$1$
\( 1 \)
$1$
$108.7523764$
1.616700096
\( -\frac{18442}{3} a^{3} - \frac{15974}{3} a^{2} + \frac{129295}{3} a + 47469 \)
\( \bigl[\frac{1}{3} a^{3} - \frac{1}{3} a^{2} - \frac{1}{3} a\) , \( -\frac{1}{3} a^{3} - \frac{2}{3} a^{2} + \frac{10}{3} a + 3\) , \( \frac{1}{3} a^{3} + \frac{2}{3} a^{2} - \frac{4}{3} a - 3\) , \( 2 a^{3} + 3 a^{2} - a - 2\) , \( \frac{17}{3} a^{3} + \frac{28}{3} a^{2} - \frac{35}{3} a - 17\bigr] \)
${y}^2+\left(\frac{1}{3}a^{3}-\frac{1}{3}a^{2}-\frac{1}{3}a\right){x}{y}+\left(\frac{1}{3}a^{3}+\frac{2}{3}a^{2}-\frac{4}{3}a-3\right){y}={x}^{3}+\left(-\frac{1}{3}a^{3}-\frac{2}{3}a^{2}+\frac{10}{3}a+3\right){x}^{2}+\left(2a^{3}+3a^{2}-a-2\right){x}+\frac{17}{3}a^{3}+\frac{28}{3}a^{2}-\frac{35}{3}a-17$
25.3-b1
25.3-b
$2$
$3$
4.4.4525.1
$4$
$[4, 0]$
25.3
\( 5^{2} \)
\( - 5^{4} \)
$8.98856$
$(-1/3a^3-2/3a^2+4/3a+1)$
$1$
$\mathsf{trivial}$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
$3$
3B
$1$
\( 3 \)
$0.021477794$
$426.2423810$
1.633120637
\( -\frac{18442}{3} a^{3} - \frac{15974}{3} a^{2} + \frac{129295}{3} a + 47469 \)
\( \bigl[a^{2} - a - 4\) , \( -\frac{1}{3} a^{3} + \frac{4}{3} a^{2} + \frac{1}{3} a - 4\) , \( \frac{1}{3} a^{3} - \frac{1}{3} a^{2} - \frac{1}{3} a\) , \( 2 a^{2} - 4 a - 3\) , \( -\frac{2}{3} a^{3} + \frac{2}{3} a^{2} + \frac{8}{3} a - 1\bigr] \)
${y}^2+\left(a^{2}-a-4\right){x}{y}+\left(\frac{1}{3}a^{3}-\frac{1}{3}a^{2}-\frac{1}{3}a\right){y}={x}^{3}+\left(-\frac{1}{3}a^{3}+\frac{4}{3}a^{2}+\frac{1}{3}a-4\right){x}^{2}+\left(2a^{2}-4a-3\right){x}-\frac{2}{3}a^{3}+\frac{2}{3}a^{2}+\frac{8}{3}a-1$
25.3-b2
25.3-b
$2$
$3$
4.4.4525.1
$4$
$[4, 0]$
25.3
\( 5^{2} \)
\( - 5^{4} \)
$8.98856$
$(-1/3a^3-2/3a^2+4/3a+1)$
$1$
$\mathsf{trivial}$
$\textsf{no}$
$\mathrm{SU}(2)$
✓
$3$
3B
$1$
\( 1 \)
$0.064433383$
$426.2423810$
1.633120637
\( -\frac{13556}{3} a^{3} + \frac{1736}{3} a^{2} + \frac{77018}{3} a + 12361 \)
\( \bigl[\frac{1}{3} a^{3} - \frac{1}{3} a^{2} - \frac{4}{3} a + 1\) , \( -a^{2} + 2 a + 4\) , \( \frac{1}{3} a^{3} + \frac{2}{3} a^{2} - \frac{4}{3} a - 4\) , \( \frac{1}{3} a^{3} + \frac{2}{3} a^{2} - \frac{13}{3} a - 3\) , \( \frac{10}{3} a^{3} + \frac{2}{3} a^{2} - \frac{64}{3} a - 21\bigr] \)
${y}^2+\left(\frac{1}{3}a^{3}-\frac{1}{3}a^{2}-\frac{4}{3}a+1\right){x}{y}+\left(\frac{1}{3}a^{3}+\frac{2}{3}a^{2}-\frac{4}{3}a-4\right){y}={x}^{3}+\left(-a^{2}+2a+4\right){x}^{2}+\left(\frac{1}{3}a^{3}+\frac{2}{3}a^{2}-\frac{13}{3}a-3\right){x}+\frac{10}{3}a^{3}+\frac{2}{3}a^{2}-\frac{64}{3}a-21$
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Pari/GP
SageMath
Magma
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CSV
*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.