Minimal Weierstrass equation
Minimal Weierstrass equation
Simplified equation
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\(y^2+xy=x^3-x^2-79478646x+249705054836\)
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(homogenize, simplify) |
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\(y^2z+xyz=x^3-x^2z-79478646xz^2+249705054836z^3\)
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(dehomogenize, simplify) |
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\(y^2=x^3-1271658339x+15979851851166\)
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(homogenize, minimize) |
Mordell-Weil group structure
\(\Z\)
Mordell-Weil generators
| $P$ | $\hat{h}(P)$ | Order |
|---|---|---|
| $(2524/9, 12872630/27)$ | $7.2464964165174078317391329632$ | $\infty$ |
Integral points
None
Invariants
| Conductor: | $N$ | = | \( 466578 \) | = | $2 \cdot 3^{2} \cdot 7^{2} \cdot 23^{2}$ |
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| Discriminant: | $\Delta$ | = | $5199483551810596393734144$ | = | $2^{12} \cdot 3^{9} \cdot 7^{7} \cdot 23^{8} $ |
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| j-invariant: | $j$ | = | \( \frac{306177219}{28672} \) | = | $2^{-12} \cdot 3^{3} \cdot 7^{-1} \cdot 23 \cdot 79^{3}$ |
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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: | $h_{\mathrm{Faltings}}$ | ≈ | $3.4809292184221766874304501239$ |
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| Stable Faltings height: | $h_{\mathrm{stable}}$ | ≈ | $-0.40631454989266202753982873006$ |
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| $abc$ quality: | $Q$ | ≈ | $0.8936155542650679$ | |||
| Szpiro ratio: | $\sigma_{m}$ | ≈ | $5.070534336106291$ | |||
BSD invariants
| Analytic rank: | $r_{\mathrm{an}}$ | = | $ 1$ |
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| Mordell-Weil rank: | $r$ | = | $ 1$ |
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| Regulator: | $\mathrm{Reg}(E/\Q)$ | ≈ | $7.2464964165174078317391329632$ |
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| Real period: | $\Omega$ | ≈ | $0.074494995203335986525234236744$ |
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| Tamagawa product: | $\prod_{p}c_p$ | = | $ 8 $ = $ 2\cdot2\cdot2\cdot1 $ |
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| Torsion order: | $\#E(\Q)_{\mathrm{tor}}$ | = | $1$ |
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| Special value: | $ L'(E,1)$ | ≈ | $4.3186217263156456923400749874 $ |
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| Analytic order of Ш: | Ш${}_{\mathrm{an}}$ | ≈ | $1$ (rounded) |
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BSD formula
$$\begin{aligned} 4.318621726 \approx L'(E,1) & = \frac{\# ะจ(E/\Q)\cdot \Omega_E \cdot \mathrm{Reg}(E/\Q) \cdot \prod_p c_p}{\#E(\Q)_{\rm tor}^2} \\ & \approx \frac{1 \cdot 0.074495 \cdot 7.246496 \cdot 8}{1^2} \\ & \approx 4.318621726\end{aligned}$$
Modular invariants
Modular form 466578.2.a.d
For more coefficients, see the Downloads section to the right.
| Modular degree: | 152616960 |
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| $ \Gamma_0(N) $-optimal: | not computed* (one of 2 curves in this isogeny class which might be optimal) | |
| Manin constant: | 1 (conditional*) |
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Local data at primes of bad reduction
This elliptic curve is not semistable. There are 4 primes $p$ of bad reduction:
| $p$ | Tamagawa number | Kodaira symbol | Reduction type | Root number | $\mathrm{ord}_p(N)$ | $\mathrm{ord}_p(\Delta)$ | $\mathrm{ord}_p(\mathrm{den}(j))$ |
|---|---|---|---|---|---|---|---|
| $2$ | $2$ | $I_{12}$ | nonsplit multiplicative | 1 | 1 | 12 | 12 |
| $3$ | $2$ | $III^{*}$ | additive | 1 | 2 | 9 | 0 |
| $7$ | $2$ | $I_{1}^{*}$ | additive | -1 | 2 | 7 | 1 |
| $23$ | $1$ | $IV^{*}$ | additive | -1 | 2 | 8 | 0 |
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 |
|---|---|---|
| $3$ | 3B | 3.4.0.1 |
The image $H:=\rho_E(\Gal(\overline{\Q}/\Q))$ of the adelic Galois representation has label 42.16.0-42.b.1.2, level \( 42 = 2 \cdot 3 \cdot 7 \), index $16$, genus $0$, and generators
$\left(\begin{array}{rr} 4 & 3 \\ 9 & 7 \end{array}\right),\left(\begin{array}{rr} 37 & 6 \\ 36 & 7 \end{array}\right),\left(\begin{array}{rr} 6 & 29 \\ 11 & 30 \end{array}\right),\left(\begin{array}{rr} 1 & 6 \\ 0 & 1 \end{array}\right),\left(\begin{array}{rr} 1 & 0 \\ 6 & 1 \end{array}\right),\left(\begin{array}{rr} 39 & 40 \\ 32 & 35 \end{array}\right),\left(\begin{array}{rr} 11 & 36 \\ 33 & 23 \end{array}\right),\left(\begin{array}{rr} 3 & 4 \\ 8 & 11 \end{array}\right)$.
The torsion field $K:=\Q(E[42])$ is a degree-$36288$ Galois extension of $\Q$ with $\Gal(K/\Q)$ isomorphic to the projection of $H$ to $\GL_2(\Z/42\Z)$.
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 | $4$ | \( 77763 = 3 \cdot 7^{2} \cdot 23^{2} \) |
| $3$ | additive | $2$ | \( 25921 = 7^{2} \cdot 23^{2} \) |
| $7$ | additive | $32$ | \( 9522 = 2 \cdot 3^{2} \cdot 23^{2} \) |
| $23$ | additive | $200$ | \( 882 = 2 \cdot 3^{2} \cdot 7^{2} \) |
Isogenies
This curve has non-trivial cyclic isogenies of degree $d$ for $d=$
3.
Its isogeny class 466578d
consists of 2 curves linked by isogenies of
degree 3.
Twists
The minimal quadratic twist of this elliptic curve is 66654c2, its twist by $161$.
Iwasawa invariants
No Iwasawa invariant data is available for this curve.
$p$-adic regulators
$p$-adic regulators are not yet computed for curves that are not $\Gamma_0$-optimal.