Minimal Weierstrass equation
Minimal Weierstrass equation
Simplified equation
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\(y^2=x^3-2316x+42896\)
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(homogenize, simplify) |
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\(y^2z=x^3-2316xz^2+42896z^3\)
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(dehomogenize, simplify) |
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\(y^2=x^3-2316x+42896\)
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(homogenize, minimize) |
Mordell-Weil group structure
\(\Z \oplus \Z/{2}\Z\)
Mordell-Weil generators
| $P$ | $\hat{h}(P)$ | Order |
|---|---|---|
| \( \left(26, 16\right) \) | $0.53963693233858955721845168329$ | $\infty$ |
| \( \left(28, 0\right) \) | $0$ | $2$ |
| $P$ | $\hat{h}(P)$ | Order |
|---|---|---|
| \([26:16:1]\) | $0.53963693233858955721845168329$ | $\infty$ |
| \([28:0:1]\) | $0$ | $2$ |
| $P$ | $\hat{h}(P)$ | Order |
|---|---|---|
| \( \left(26, 16\right) \) | $0.53963693233858955721845168329$ | $\infty$ |
| \( \left(28, 0\right) \) | $0$ | $2$ |
Integral points
\((10,\pm 144)\), \((26,\pm 16)\), \( \left(28, 0\right) \), \((29,\pm 11)\), \((64,\pm 396)\)
\([10:\pm 144:1]\), \([26:\pm 16:1]\), \([28:0:1]\), \([29:\pm 11:1]\), \([64:\pm 396:1]\)
\((10,\pm 144)\), \((26,\pm 16)\), \( \left(28, 0\right) \), \((29,\pm 11)\), \((64,\pm 396)\)
Invariants
| Conductor: | $N$ | = | \( 576 \) | = | $2^{6} \cdot 3^{2}$ |
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| Minimal Discriminant: | $\Delta$ | = | $143327232$ | = | $2^{16} \cdot 3^{7} $ |
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| j-invariant: | $j$ | = | \( \frac{28756228}{3} \) | = | $2^{2} \cdot 3^{-1} \cdot 193^{3}$ |
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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: | $h_{\mathrm{Faltings}}$ | ≈ | $0.59710103881414288245584406309$ |
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| Stable Faltings height: | $h_{\mathrm{stable}}$ | ≈ | $-0.87640134626650570913142138398$ |
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| $abc$ quality: | $Q$ | ≈ | $1.0561716345991692$ | |||
| Szpiro ratio: | $\sigma_{m}$ | ≈ | $5.483921199815882$ | |||
| Intrinsic torsion order: | $\#E(\mathbb Q)_\text{tors}^\text{is}$ | = | $2$ | |||
BSD invariants
| Analytic rank: | $r_{\mathrm{an}}$ | = | $ 1$ |
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| Mordell-Weil rank: | $r$ | = | $ 1$ |
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| Regulator: | $\mathrm{Reg}(E/\Q)$ | ≈ | $0.53963693233858955721845168329$ |
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| Real period: | $\Omega$ | ≈ | $1.7607876529005999591360601728$ |
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| Tamagawa product: | $\prod_{p}c_p$ | = | $ 8 $ = $ 2^{2}\cdot2 $ |
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| Torsion order: | $\#E(\Q)_{\mathrm{tor}}$ | = | $2$ |
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| Special value: | $ L'(E,1)$ | ≈ | $1.9003720950218899493176796283 $ |
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| Analytic order of Ш: | Ш${}_{\mathrm{an}}$ | ≈ | $1$ (rounded) |
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BSD formula
$$\begin{aligned} 1.900372095 \approx L'(E,1) & = \frac{\# ะจ(E/\Q)\cdot \Omega_E \cdot \mathrm{Reg}(E/\Q) \cdot \prod_p c_p}{\#E(\Q)_{\rm tor}^2} \\ & \approx \frac{1 \cdot 1.760788 \cdot 0.539637 \cdot 8}{2^2} \\ & \approx 1.900372095\end{aligned}$$
Modular invariants
For more coefficients, see the Downloads section to the right.
| Modular degree: | 256 |
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| $ \Gamma_0(N) $-optimal: | no | |
| Manin constant: | 1 |
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Local data at primes of bad reduction
This elliptic curve is not semistable. There are 2 primes $p$ of bad reduction:
| $p$ | Tamagawa number | Kodaira symbol | Reduction type | Root number | $\mathrm{ord}_p(N)$ | $\mathrm{ord}_p(\Delta)$ | $\mathrm{ord}_p(\mathrm{den}(j))$ |
|---|---|---|---|---|---|---|---|
| $2$ | $4$ | $I_{6}^{*}$ | additive | -1 | 6 | 16 | 0 |
| $3$ | $2$ | $I_{1}^{*}$ | additive | -1 | 2 | 7 | 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 | $\ell$-adic index |
|---|---|---|---|
| $2$ | 2B | 16.96.0.224 | $96$ |
The image $H:=\rho_E(\Gal(\overline{\Q}/\Q))$ of the adelic Galois representation has label 48.192.1-48.em.1.7, level \( 48 = 2^{4} \cdot 3 \), index $192$, genus $1$, and generators
$\left(\begin{array}{rr} 1 & 0 \\ 16 & 1 \end{array}\right),\left(\begin{array}{rr} 16 & 43 \\ 45 & 14 \end{array}\right),\left(\begin{array}{rr} 1 & 16 \\ 0 & 1 \end{array}\right),\left(\begin{array}{rr} 38 & 29 \\ 1 & 18 \end{array}\right),\left(\begin{array}{rr} 35 & 32 \\ 36 & 23 \end{array}\right),\left(\begin{array}{rr} 15 & 2 \\ 46 & 35 \end{array}\right),\left(\begin{array}{rr} 5 & 4 \\ 44 & 45 \end{array}\right),\left(\begin{array}{rr} 33 & 16 \\ 32 & 17 \end{array}\right)$.
The torsion field $K:=\Q(E[48])$ is a degree-$6144$ Galois extension of $\Q$ with $\Gal(K/\Q)$ isomorphic to the projection of $H$ to $\GL_2(\Z/48\Z)$.
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 |
|---|---|---|---|
| $2$ | additive | $2$ | \( 9 = 3^{2} \) |
| $3$ | additive | $8$ | \( 64 = 2^{6} \) |
Isogenies
This curve has non-trivial cyclic isogenies of degree $d$ for $d=$
2, 4 and 8.
Its isogeny class 576i
consists of 6 curves linked by isogenies of
degrees dividing 8.
Twists
The minimal quadratic twist of this elliptic curve is 24a3, its twist by $24$.
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 |
|---|---|---|---|
| $2$ | \(\Q(\sqrt{3}) \) | \(\Z/2\Z \oplus \Z/2\Z\) | 2.2.12.1-768.1-l6 |
| $2$ | \(\Q(\sqrt{6}) \) | \(\Z/8\Z\) | 2.2.24.1-24.1-b5 |
| $2$ | \(\Q(\sqrt{2}) \) | \(\Z/4\Z\) | 2.2.8.1-1296.1-b6 |
| $4$ | \(\Q(\zeta_{24})^+\) | \(\Z/2\Z \oplus \Z/8\Z\) | 4.4.2304.1-72.1-b6 |
| $8$ | 8.0.191102976.4 | \(\Z/2\Z \oplus \Z/4\Z\) | not in database |
| $8$ | 8.0.47775744.4 | \(\Z/8\Z\) | not in database |
| $8$ | 8.8.12230590464.1 | \(\Z/2\Z \oplus \Z/16\Z\) | not in database |
| $8$ | 8.2.11609505792.11 | \(\Z/6\Z\) | not in database |
| $16$ | 16.0.36520347436056576.1 | \(\Z/4\Z \oplus \Z/8\Z\) | not in database |
| $16$ | 16.0.336571521970697404416.2 | \(\Z/2\Z \oplus \Z/8\Z\) | not in database |
| $16$ | 16.0.1846757322198614016.2 | \(\Z/2\Z \oplus \Z/16\Z\) | not in database |
| $16$ | deg 16 | \(\Z/2\Z \oplus \Z/6\Z\) | not in database |
| $16$ | deg 16 | \(\Z/24\Z\) | not in database |
| $16$ | deg 16 | \(\Z/12\Z\) | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Reduction type | add | add | ord | ss | ord | ord | ord | ord | ord | ord | ord | ord | ord | ord | ss |
| $\lambda$-invariant(s) | - | - | 1 | 1,1 | 1 | 1 | 1 | 1 | 1 | 3 | 1 | 1 | 1 | 1 | 1,1 |
| $\mu$-invariant(s) | - | - | 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.