Base field \(\Q(\sqrt{-165}) \)
Generator \(a\), with minimal polynomial \( x^{2} + 165 \); class number \(8\).
Weierstrass equation
This is not a global minimal model: it is minimal at all primes except \((19,a+5)\). No global minimal model exists.
Mordell-Weil group structure
\(\Z\)
Mordell-Weil generators
| $P$ | $\hat{h}(P)$ | Order |
|---|---|---|
| $\left(\frac{12}{5} a - \frac{193}{5} : -\frac{62}{25} a - \frac{261}{5} : 1\right)$ | $0.54670486219032486097334541770880412403$ | $\infty$ |
Invariants
| Conductor: | $\frak{N}$ | = | \((22,2a)\) | = | \((2,a+1)^{2}\cdot(11,a)\) |
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| Conductor norm: | $N(\frak{N})$ | = | \( 44 \) | = | \(2^{2}\cdot11\) |
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| Discriminant: | $\Delta$ | = | $-18854179344a+63891668236$ | ||
| Discriminant ideal: | $(\Delta)$ | = | \((-18854179344a+63891668236)\) | = | \((2,a+1)^{4}\cdot(11,a)^{6}\cdot(19,a+5)^{12}\) |
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| Discriminant norm: | $N(\Delta)$ | = | \( 62736358261372275957136 \) | = | \(2^{4}\cdot11^{6}\cdot19^{12}\) |
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| Minimal discriminant: | $\frak{D}_{\mathrm{min}}$ | = | \((5324)\) | = | \((2,a+1)^{4}\cdot(11,a)^{6}\) |
| Minimal discriminant norm: | $N(\frak{D}_{\mathrm{min}})$ | = | \( 28344976 \) | = | \(2^{4}\cdot11^{6}\) |
| j-invariant: | $j$ | = | \( -\frac{199794688}{1331} \) | ||
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| Endomorphism ring: | $\mathrm{End}(E)$ | = | \(\Z\) | ||
| Geometric endomorphism ring: | $\mathrm{End}(E_{\overline{\Q}})$ | = | \(\Z\) (no potential complex multiplication) | ||
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| Sato-Tate group: | $\mathrm{ST}(E)$ | = | $\mathrm{SU}(2)$ | ||
BSD invariants
| Analytic rank: | $r_{\mathrm{an}}$ | = | \( 1 \) |
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| Mordell-Weil rank: | $r$ | = | \(1\) |
| Regulator: | $\mathrm{Reg}(E/K)$ | ≈ | \( 0.54670486219032486097334541770880412403 \) |
| Néron-Tate Regulator: | $\mathrm{Reg}_{\mathrm{NT}}(E/K)$ | ≈ | \( 1.09340972438064972194669083541760824806 \) |
| Global period: | $\Omega(E/K)$ | ≈ | \( 9.8297834517808190283023307532103843928 \) |
| Tamagawa product: | $\prod_{\frak{p}}c_{\frak{p}}$ | = | \( 6 \) = \(1\cdot( 2 \cdot 3 )\cdot1\) |
| Torsion order: | $\#E(K)_{\mathrm{tor}}$ | = | \(1\) |
| Special value: | $L^{(r)}(E/K,1)/r!$ | ≈ | \( 11.295843816786370973876016718168141694 \) |
| Analytic order of Ш: | Ш${}_{\mathrm{an}}$ | = | \( 9 \) (rounded) |
BSD formula
$$\begin{aligned}11.295843817 \approx L'(E/K,1) & \overset{?}{=} \frac{ \# ะจ(E/K) \cdot \Omega(E/K) \cdot \mathrm{Reg}_{\mathrm{NT}}(E/K) \cdot \prod_{\mathfrak{p}} c_{\mathfrak{p}} } { \#E(K)_{\mathrm{tor}}^2 \cdot \left|d_K\right|^{1/2} } \\ & \approx \frac{ 9 \cdot 4.914892 \cdot 1.093410 \cdot 6 } { {1^2 \cdot 25.690465} } \\ & \approx 11.295843817 \end{aligned}$$
Local data at primes of bad reduction
This elliptic curve is not semistable. There are 2 primes $\frak{p}$ of bad reduction. Primes of good reduction for the curve but which divide the discriminant of the model above (if any) are included.
| $\mathfrak{p}$ | $N(\mathfrak{p})$ | Tamagawa number | Kodaira symbol | Reduction type | Root number | \(\mathrm{ord}_{\mathfrak{p}}(\mathfrak{N}\)) | \(\mathrm{ord}_{\mathfrak{p}}(\mathfrak{D}_{\mathrm{min}}\)) | \(\mathrm{ord}_{\mathfrak{p}}(\mathrm{den}(j))\) |
|---|---|---|---|---|---|---|---|---|
| \((2,a+1)\) | \(2\) | \(1\) | \(IV\) | Additive | \(-1\) | \(2\) | \(4\) | \(0\) |
| \((11,a)\) | \(11\) | \(6\) | \(I_{6}\) | Split multiplicative | \(-1\) | \(1\) | \(6\) | \(6\) |
| \((19,a+5)\) | \(19\) | \(1\) | \(I_0\) | Good | \(1\) | \(0\) | \(0\) | \(0\) |
Galois Representations
The mod \( p \) Galois Representation has maximal image for all primes \( p < 1000 \) except those listed.
| prime | Image of Galois Representation |
|---|---|
| \(3\) | 3B |
Isogenies and isogeny class
This curve has non-trivial cyclic isogenies of degree \(d\) for \(d=\)
3.
Its isogeny class
44.1-h
consists of curves linked by isogenies of
degree 3.
Base change
This elliptic curve is a \(\Q\)-curve. It is the base change of the following 2 elliptic curves:
| Base field | Curve |
|---|---|
| \(\Q\) | 4356.j1 |
| \(\Q\) | 4400.v1 |