Minimal Weierstrass equation
Minimal Weierstrass equation
Simplified equation
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\(y^2+xy=x^3-x^2-7306x+174836\)
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(homogenize, simplify) |
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\(y^2z+xyz=x^3-x^2z-7306xz^2+174836z^3\)
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(dehomogenize, simplify) |
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\(y^2=x^3-116899x+11072606\)
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(homogenize, minimize) |
Mordell-Weil group structure
\(\Z\)
Mordell-Weil generators
| $P$ | $\hat{h}(P)$ | Order |
|---|---|---|
| $(-92/9, 13594/27)$ | $2.0067812806375958172902377071$ | $\infty$ |
Integral points
None
Invariants
| Conductor: | $N$ | = | \( 132878 \) | = | $2 \cdot 29^{2} \cdot 79$ |
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| Discriminant: | $\Delta$ | = | $12029706843904$ | = | $2^{8} \cdot 29^{6} \cdot 79 $ |
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| j-invariant: | $j$ | = | \( \frac{72511713}{20224} \) | = | $2^{-8} \cdot 3^{3} \cdot 79^{-1} \cdot 139^{3}$ |
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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: | $\mathrm{ST}(E)$ | = | $\mathrm{SU}(2)$ | |||
| Faltings height: | $h_{\mathrm{Faltings}}$ | ≈ | $1.2170704576765135392085284933$ |
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| Stable Faltings height: | $h_{\mathrm{stable}}$ | ≈ | $-0.46657745731672347438310752288$ |
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| $abc$ quality: | $Q$ | ≈ | $0.8960566672900944$ | |||
| Szpiro ratio: | $\sigma_{m}$ | ≈ | $3.246793887566693$ | |||
BSD invariants
| Analytic rank: | $r_{\mathrm{an}}$ | = | $ 1$ |
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| Mordell-Weil rank: | $r$ | = | $ 1$ |
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| Regulator: | $\mathrm{Reg}(E/\Q)$ | ≈ | $2.0067812806375958172902377071$ |
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| Real period: | $\Omega$ | ≈ | $0.66510662175591777472352224105$ |
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| Tamagawa product: | $\prod_{p}c_p$ | = | $ 4 $ = $ 2\cdot2\cdot1 $ |
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| Torsion order: | $\#E(\Q)_{\mathrm{tor}}$ | = | $1$ |
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| Special value: | $ L'(E,1)$ | ≈ | $5.3388940726715428784721399922 $ |
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| Analytic order of Ш: | Ш${}_{\mathrm{an}}$ | ≈ | $1$ (rounded) |
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BSD formula
$$\begin{aligned} 5.338894073 \approx L'(E,1) & = \frac{\# ะจ(E/\Q)\cdot \Omega_E \cdot \mathrm{Reg}(E/\Q) \cdot \prod_p c_p}{\#E(\Q)_{\rm tor}^2} \\ & \approx \frac{1 \cdot 0.665107 \cdot 2.006781 \cdot 4}{1^2} \\ & \approx 5.338894073\end{aligned}$$
Modular invariants
Modular form 132878.2.a.h
For more coefficients, see the Downloads section to the right.
| Modular degree: | 774144 |
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| $ \Gamma_0(N) $-optimal: | yes | |
| Manin constant: | 1 |
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Local data at primes of bad reduction
This elliptic curve is not semistable. There are 3 primes $p$ of bad reduction:
| $p$ | Tamagawa number | Kodaira symbol | Reduction type | Root number | $\mathrm{ord}_p(N)$ | $\mathrm{ord}_p(\Delta)$ | $\mathrm{ord}_p(\mathrm{den}(j))$ |
|---|---|---|---|---|---|---|---|
| $2$ | $2$ | $I_{8}$ | nonsplit multiplicative | 1 | 1 | 8 | 8 |
| $29$ | $2$ | $I_0^{*}$ | additive | 1 | 2 | 6 | 0 |
| $79$ | $1$ | $I_{1}$ | nonsplit multiplicative | 1 | 1 | 1 | 1 |
Galois representations
The $\ell$-adic Galois representation has maximal image for all primes $\ell$.
The image $H:=\rho_E(\Gal(\overline{\Q}/\Q))$ of the adelic Galois representation has level \( 316 = 2^{2} \cdot 79 \), index $2$, genus $0$, and generators
$\left(\begin{array}{rr} 1 & 1 \\ 315 & 0 \end{array}\right),\left(\begin{array}{rr} 315 & 2 \\ 314 & 3 \end{array}\right),\left(\begin{array}{rr} 161 & 2 \\ 161 & 3 \end{array}\right),\left(\begin{array}{rr} 159 & 2 \\ 159 & 3 \end{array}\right),\left(\begin{array}{rr} 1 & 0 \\ 2 & 1 \end{array}\right),\left(\begin{array}{rr} 1 & 2 \\ 0 & 1 \end{array}\right)$.
The torsion field $K:=\Q(E[316])$ is a degree-$1845642240$ Galois extension of $\Q$ with $\Gal(K/\Q)$ isomorphic to the projection of $H$ to $\GL_2(\Z/316\Z)$.
The table below list all primes $\ell$ for which the Serre invariants associated to the mod-$\ell$ Galois representation are exceptional.
| $\ell$ | Reduction type | Serre weight | Serre conductor |
|---|---|---|---|
| $2$ | nonsplit multiplicative | $4$ | \( 66439 = 29^{2} \cdot 79 \) |
| $29$ | additive | $422$ | \( 158 = 2 \cdot 79 \) |
| $79$ | nonsplit multiplicative | $80$ | \( 1682 = 2 \cdot 29^{2} \) |
Isogenies
This curve has no rational isogenies. Its isogeny class 132878.h consists of this curve only.
Twists
The minimal quadratic twist of this elliptic curve is 158.c1, its twist by $29$.
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 $E(\Q)_{\rm tors}$ (which is trivial) are as follows:
| $[K:\Q]$ | $K$ | $E(K)_{\rm tors}$ | Base change curve |
|---|---|---|---|
| $3$ | 3.3.316.1 | \(\Z/2\Z\) | not in database |
| $6$ | 6.6.31554496.1 | \(\Z/2\Z \oplus \Z/2\Z\) | not in database |
| $8$ | deg 8 | \(\Z/3\Z\) | not in database |
| $12$ | deg 12 | \(\Z/4\Z\) | 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.
Iwasawa invariants
| $p$ | 2 | 3 | 5 | 7 | 11 | 13 | 17 | 19 | 23 | 29 | 31 | 37 | 41 | 43 | 47 | 79 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Reduction type | nonsplit | ss | ord | ord | ord | ord | ord | ss | ord | add | ord | ord | ord | ord | ord | nonsplit |
| $\lambda$-invariant(s) | 4 | 1,1 | 3 | 1 | 1 | 1 | 1 | 1,3 | 1 | - | 1 | 1 | 1 | 1 | 1 | 1 |
| $\mu$-invariant(s) | 0 | 0,0 | 0 | 0 | 0 | 0 | 0 | 0,0 | 0 | - | 0 | 0 | 0 | 0 | 0 | 0 |
An entry - indicates that the invariants are not computed because the reduction is additive.
$p$-adic regulators
$p$-adic regulators are not yet computed for curves that are not $\Gamma_0$-optimal.