Minimal Weierstrass equation
Minimal Weierstrass equation
Simplified equation
\(y^2=x^3-x^2-33x+97\) | (homogenize, simplify) |
\(y^2z=x^3-x^2z-33xz^2+97z^3\) | (dehomogenize, simplify) |
\(y^2=x^3-2700x+62640\) | (homogenize, minimize) |
Mordell-Weil group structure
\(\Z\)
Infinite order Mordell-Weil generator and height
$P$ | = | \(\left(1, 8\right)\) |
$\hat{h}(P)$ | ≈ | $0.21800234997249523263975284101$ |
Integral points
\((1,\pm 8)\), \((3,\pm 4)\), \((33,\pm 184)\)
Invariants
Conductor: | \( 1600 \) | = | $2^{6} \cdot 5^{2}$ | comment: Conductor
sage: E.conductor().factor()
gp: ellglobalred(E)[1]
magma: Conductor(E);
oscar: conductor(E)
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Discriminant: | $-819200 $ | = | $-1 \cdot 2^{15} \cdot 5^{2} $ | comment: Discriminant
sage: E.discriminant().factor()
gp: E.disc
magma: Discriminant(E);
oscar: discriminant(E)
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j-invariant: | \( -5000 \) | = | $-1 \cdot 2^{3} \cdot 5^{4}$ | comment: j-invariant
sage: E.j_invariant().factor()
gp: E.j
magma: jInvariant(E);
oscar: j_invariant(E)
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Endomorphism ring: | $\Z$ | |||
Geometric endomorphism ring: | \(\Z\) | (no potential complex multiplication) | sage: E.has_cm()
magma: HasComplexMultiplication(E);
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Sato-Tate group: | $\mathrm{SU}(2)$ | |||
Faltings height: | $-0.14256126585487994200808135286\dots$ | gp: ellheight(E)
magma: FaltingsHeight(E);
oscar: faltings_height(E)
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Stable Faltings height: | $-1.2772348936271616412130813936\dots$ | magma: StableFaltingsHeight(E);
oscar: stable_faltings_height(E)
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$abc$ quality: | $0.9949912704917342\dots$ | |||
Szpiro ratio: | $3.0402344416412825\dots$ |
BSD invariants
Analytic rank: | $1$ | sage: E.analytic_rank()
gp: ellanalyticrank(E)
magma: AnalyticRank(E);
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Regulator: | $0.21800234997249523263975284101\dots$ | comment: Regulator
sage: E.regulator()
G = E.gen \\ if available
magma: Regulator(E);
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Real period: | $2.7062119713356455260887799865\dots$ | comment: Real Period
sage: E.period_lattice().omega()
gp: if(E.disc>0,2,1)*E.omega[1]
magma: (Discriminant(E) gt 0 select 2 else 1) * RealPeriod(E);
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Tamagawa product: | $ 4 $ = $ 2^{2}\cdot1 $ | comment: Tamagawa numbers
sage: E.tamagawa_numbers()
gp: gr=ellglobalred(E); [[gr[4][i,1],gr[5][i][4]] | i<-[1..#gr[4][,1]]]
magma: TamagawaNumbers(E);
oscar: tamagawa_numbers(E)
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Torsion order: | $1$ | comment: Torsion order
sage: E.torsion_order()
gp: elltors(E)[1]
magma: Order(TorsionSubgroup(E));
oscar: prod(torsion_structure(E)[1])
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Analytic order of Ш: | $1$ ( rounded) | comment: Order of Sha
sage: E.sha().an_numerical()
magma: MordellWeilShaInformation(E);
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Special value: | $ L'(E,1) $ ≈ $ 2.3598422770994785310209502495 $ | comment: Special L-value
r = E.rank();
gp: [r,L1r] = ellanalyticrank(E); L1r/r!
magma: Lr1 where r,Lr1 := AnalyticRank(E: Precision:=12);
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BSD formula
$\displaystyle 2.359842277 \approx L'(E,1) = \frac{\# Ш(E/\Q)\cdot \Omega_E \cdot \mathrm{Reg}(E/\Q) \cdot \prod_p c_p}{\#E(\Q)_{\rm tor}^2} \approx \frac{1 \cdot 2.706212 \cdot 0.218002 \cdot 4}{1^2} \approx 2.359842277$
Modular invariants
For more coefficients, see the Downloads section to the right.
Modular degree: | 192 | comment: Modular degree
sage: E.modular_degree()
gp: ellmoddegree(E)
magma: ModularDegree(E);
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$ \Gamma_0(N) $-optimal: | yes | |
Manin constant: | 1 | comment: Manin constant
magma: ManinConstant(E);
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Local data
This elliptic curve is not semistable. There are 2 primes of bad reduction:
prime | Tamagawa number | Kodaira symbol | Reduction type | Root number | ord($N$) | ord($\Delta$) | ord$(j)_{-}$ |
---|---|---|---|---|---|---|---|
$2$ | $4$ | $I_{5}^{*}$ | Additive | 1 | 6 | 15 | 0 |
$5$ | $1$ | $II$ | Additive | 1 | 2 | 2 | 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 |
---|---|---|
$2$ | 2G | 8.2.0.1 |
$5$ | 5Ns | 5.15.0.1 |
The image $H:=\rho_E(\Gal(\overline{\Q}/\Q))$ of the adelic Galois representation has label 40.60.3.u.1, level \( 40 = 2^{3} \cdot 5 \), index $60$, genus $3$, and generators
$\left(\begin{array}{rr} 21 & 0 \\ 0 & 21 \end{array}\right),\left(\begin{array}{rr} 31 & 32 \\ 25 & 17 \end{array}\right),\left(\begin{array}{rr} 1 & 16 \\ 0 & 9 \end{array}\right),\left(\begin{array}{rr} 31 & 10 \\ 20 & 31 \end{array}\right),\left(\begin{array}{rr} 31 & 30 \\ 30 & 11 \end{array}\right),\left(\begin{array}{rr} 21 & 20 \\ 20 & 21 \end{array}\right),\left(\begin{array}{rr} 31 & 0 \\ 0 & 31 \end{array}\right),\left(\begin{array}{rr} 9 & 0 \\ 0 & 9 \end{array}\right),\left(\begin{array}{rr} 1 & 20 \\ 0 & 1 \end{array}\right),\left(\begin{array}{rr} 31 & 25 \\ 25 & 6 \end{array}\right),\left(\begin{array}{rr} 33 & 0 \\ 0 & 33 \end{array}\right),\left(\begin{array}{rr} 31 & 22 \\ 3 & 9 \end{array}\right),\left(\begin{array}{rr} 9 & 8 \\ 32 & 1 \end{array}\right)$.
The torsion field $K:=\Q(E[40])$ is a degree-$12288$ Galois extension of $\Q$ with $\Gal(K/\Q)$ isomorphic to the projection of $H$ to $\GL_2(\Z/40\Z)$.
Isogenies
This curve has no rational isogenies. Its isogeny class 1600d consists of this curve only.
Twists
The minimal quadratic twist of this elliptic curve is 800f1, its twist by $-8$.
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 |
---|---|---|---|
$3$ | 3.1.200.1 | \(\Z/2\Z\) | Not in database |
$6$ | 6.0.320000.1 | \(\Z/2\Z \oplus \Z/2\Z\) | Not in database |
$8$ | 8.2.8957952000000.4 | \(\Z/3\Z\) | Not in database |
$8$ | 8.0.20480000000.3 | \(\Z/5\Z\) | Not in database |
$12$ | 12.2.1310720000000000.3 | \(\Z/4\Z\) | Not in database |
$16$ | 16.4.419430400000000000000.4 | \(\Z/5\Z\) | Not in database |
We only show fields where the torsion growth is primitive.
Iwasawa invariants
$p$ | 2 | 3 | 5 | 7 | 11 | 13 | 17 | 19 | 23 | 29 | 31 | 37 | 41 | 43 | 47 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Reduction type | add | ord | add | ord | ord | ss | ord | ord | ord | ord | ord | ord | ord | ord | ord |
$\lambda$-invariant(s) | - | 1 | - | 1 | 1 | 1,1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
$\mu$-invariant(s) | - | 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
Note: $p$-adic regulator data only exists for primes $p\ge 5$ of good ordinary reduction.