Minimal Weierstrass equation
Minimal equation
Minimal equation
Simplified equation
\(y^2+xy=x^3-498053228x-6167895603312\)
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(homogenize, simplify) |
\(y^2z+xyz=x^3-498053228xz^2-6167895603312z^3\)
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(dehomogenize, simplify) |
\(y^2=x^3-645476983515x-287767400837174154\)
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(homogenize, minimize) |
Mordell-Weil group structure
\(\Z/{2}\Z\)
Torsion generators
\( \left(\frac{107839}{4}, -\frac{107839}{8}\right) \)
Integral points
None
Invariants
sage: E.conductor().factor()
gp: ellglobalred(E)[1]
magma: Conductor(E);
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Conductor: | \( 189618 \) | = | $2 \cdot 3 \cdot 11 \cdot 13^{2} \cdot 17$ |
sage: E.discriminant().factor()
gp: E.disc
magma: Discriminant(E);
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Discriminant: | $-8527408942700901249012436992 $ | = | $-1 \cdot 2^{12} \cdot 3^{2} \cdot 11^{2} \cdot 13^{18} \cdot 17 $ |
sage: E.j_invariant().factor()
gp: E.j
magma: jInvariant(E);
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j-invariant: | \( -\frac{2830680648734534916567625}{1766676274677722124288} \) | = | $-1 \cdot 2^{-12} \cdot 3^{-2} \cdot 5^{3} \cdot 7^{3} \cdot 11^{-2} \cdot 13^{-12} \cdot 17^{-1} \cdot 4041683^{3}$ |
Endomorphism ring: | $\Z$ | ||
Geometric endomorphism ring: | \(\Z\) | (no potential complex multiplication) | |
Sato-Tate group: | $\mathrm{SU}(2)$ | ||
Faltings height: | $4.0611140885299172870306205522\dots$ | ||
Stable Faltings height: | $2.7786394097991489190038768314\dots$ |
BSD invariants
sage: E.rank()
magma: Rank(E);
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Analytic rank: | $0$ | ||
sage: E.regulator()
magma: Regulator(E);
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Regulator: | $1$ | ||
sage: E.period_lattice().omega()
gp: E.omega[1]
magma: RealPeriod(E);
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Real period: | $0.015539314208347085820905596224\dots$ | ||
sage: E.tamagawa_numbers()
gp: gr=ellglobalred(E); [[gr[4][i,1],gr[5][i][4]] | i<-[1..#gr[4][,1]]]
magma: TamagawaNumbers(E);
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Tamagawa product: | $ 192 $ = $ ( 2^{2} \cdot 3 )\cdot2\cdot2\cdot2^{2}\cdot1 $ | ||
sage: E.torsion_order()
gp: elltors(E)[1]
magma: Order(TorsionSubgroup(E));
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Torsion order: | $2$ | ||
sage: E.sha().an_numerical()
magma: MordellWeilShaInformation(E);
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Analytic order of Ш: | $9$ = $3^2$ (exact) | ||
sage: r = E.rank();
gp: ar = ellanalyticrank(E);
magma: Lr1 where r,Lr1 := AnalyticRank(E: Precision:=12);
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Special value: | $ L(E,1) $ ≈ $ 6.7129837380059410746312175688 $ |
Modular invariants
Modular form 189618.2.a.br
For more coefficients, see the Downloads section to the right.
sage: E.modular_degree()
magma: ModularDegree(E);
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Modular degree: | 153280512 | ||
$ \Gamma_0(N) $-optimal: | no | ||
Manin constant: | 1 |
Local data
This elliptic curve is not semistable. There are 5 primes of bad reduction:
prime | Tamagawa number | Kodaira symbol | Reduction type | Root number | ord($N$) | ord($\Delta$) | ord$(j)_{-}$ |
---|---|---|---|---|---|---|---|
$2$ | $12$ | $I_{12}$ | Split multiplicative | -1 | 1 | 12 | 12 |
$3$ | $2$ | $I_{2}$ | Split multiplicative | -1 | 1 | 2 | 2 |
$11$ | $2$ | $I_{2}$ | Non-split multiplicative | 1 | 1 | 2 | 2 |
$13$ | $4$ | $I_{12}^{*}$ | Additive | 1 | 2 | 18 | 12 |
$17$ | $1$ | $I_{1}$ | Split multiplicative | -1 | 1 | 1 | 1 |
Galois representations
The $\ell$-adic Galois representation has maximal image for all primes $\ell$ except those listed in the table below.
prime $\ell$ | mod-$\ell$ image | $\ell$-adic image |
---|---|---|
$2$ | 2B | 2.3.0.1 |
$3$ | 3B | 3.4.0.1 |
$p$-adic regulators
All $p$-adic regulators are identically $1$ since the rank is $0$.
No Iwasawa invariant data is available for this curve.
Isogenies
This curve has non-trivial cyclic isogenies of degree $d$ for $d=$
2, 3 and 6.
Its isogeny class 189618.br
consists of 4 curves linked by isogenies of
degrees dividing 6.
Growth of torsion in number fields
The number fields $K$ of degree less than 24 such that $E(K)_{\rm tors}$ is strictly larger than $E(\Q)_{\rm tors}$ $\cong \Z/{2}\Z$ are as follows:
$[K:\Q]$ | $K$ | $E(K)_{\rm tors}$ | Base change curve |
---|---|---|---|
$2$ | \(\Q(\sqrt{-39}) \) | \(\Z/6\Z\) | Not in database |
$2$ | \(\Q(\sqrt{-17}) \) | \(\Z/2\Z \oplus \Z/2\Z\) | Not in database |
$4$ | 4.2.12514788.1 | \(\Z/4\Z\) | Not in database |
$4$ | \(\Q(\sqrt{-17}, \sqrt{-39})\) | \(\Z/2\Z \oplus \Z/6\Z\) | Not in database |
$6$ | 6.2.158638659079147533.1 | \(\Z/6\Z\) | Not in database |
$8$ | Deg 8 | \(\Z/2\Z \oplus \Z/4\Z\) | Not in database |
$8$ | Deg 8 | \(\Z/2\Z \oplus \Z/4\Z\) | Not in database |
$8$ | Deg 8 | \(\Z/12\Z\) | Not in database |
$12$ | Deg 12 | \(\Z/3\Z \oplus \Z/6\Z\) | Not in database |
$12$ | Deg 12 | \(\Z/2\Z \oplus \Z/6\Z\) | Not in database |
$16$ | Deg 16 | \(\Z/8\Z\) | Not in database |
$16$ | Deg 16 | \(\Z/2\Z \oplus \Z/12\Z\) | Not in database |
$16$ | Deg 16 | \(\Z/2\Z \oplus \Z/12\Z\) | Not in database |
$18$ | 18.0.193643079756895602999529258711396024499161761922904064.1 | \(\Z/18\Z\) | Not in database |
We only show fields where the torsion growth is primitive. For fields not in the database, click on the degree shown to reveal the defining polynomial.