Properties

Label 480960eq2
Conductor $480960$
Discriminant $-2.077\times 10^{25}$
j-invariant \( -\frac{6093832136609347161121}{108676727597808690} \)
CM no
Rank $2$
Torsion structure trivial

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Minimal Weierstrass equation

Minimal Weierstrass equation

Simplified equation

\(y^2=x^3-219185292x-1268107303664\) Copy content Toggle raw display (homogenize, simplify)
\(y^2z=x^3-219185292xz^2-1268107303664z^3\) Copy content Toggle raw display (dehomogenize, simplify)
\(y^2=x^3-219185292x-1268107303664\) Copy content Toggle raw display (homogenize, minimize)

Copy content comment:Define the curve
 
Copy content sage:E = EllipticCurve([0, 0, 0, -219185292, -1268107303664])
 
Copy content gp:E = ellinit([0, 0, 0, -219185292, -1268107303664])
 
Copy content magma:E := EllipticCurve([0, 0, 0, -219185292, -1268107303664]);
 
Copy content oscar:E = elliptic_curve([0, 0, 0, -219185292, -1268107303664])
 
Copy content comment:Simplified equation
 
Copy content sage:E.short_weierstrass_model()
 
Copy content magma:WeierstrassModel(E);
 
Copy content oscar:short_weierstrass_model(E)
 

Mordell-Weil group structure

\(\Z \oplus \Z\)

Copy content comment:Mordell-Weil group
 
Copy content magma:MordellWeilGroup(E);
 

Mordell-Weil generators

$P$$\hat{h}(P)$Order
\( \left(18050, 810144\right) \)$6.5636621499649224557073697434$$\infty$
\( \left(157890, 62451616\right) \)$9.7697847542828064571509263651$$\infty$

$P$$\hat{h}(P)$Order
\([18050:810144:1]\)$6.5636621499649224557073697434$$\infty$
\([157890:62451616:1]\)$9.7697847542828064571509263651$$\infty$

$P$$\hat{h}(P)$Order
\( \left(18050, 810144\right) \)$6.5636621499649224557073697434$$\infty$
\( \left(157890, 62451616\right) \)$9.7697847542828064571509263651$$\infty$

Integral points

\((18050,\pm 810144)\), \((157890,\pm 62451616)\) Copy content Toggle raw display

\([18050:\pm 810144:1]\), \([157890:\pm 62451616:1]\) Copy content Toggle raw display

\((18050,\pm 810144)\), \((157890,\pm 62451616)\) Copy content Toggle raw display

Copy content comment:Integral points
 
Copy content sage:E.integral_points()
 
Copy content magma:IntegralPoints(E);
 

Invariants

Conductor: $N$  =  \( 480960 \) = $2^{6} \cdot 3^{2} \cdot 5 \cdot 167$
Copy content comment:Conductor
 
Copy content sage:E.conductor().factor()
 
Copy content gp:ellglobalred(E)[1]
 
Copy content magma:Conductor(E);
 
Copy content oscar:conductor(E)
 
Minimal Discriminant: $\Delta$  =  $-20768446065882571737661440$ = $-1 \cdot 2^{19} \cdot 3^{7} \cdot 5 \cdot 167^{7} $
Copy content comment:Discriminant
 
Copy content sage:E.discriminant().factor()
 
Copy content gp:E.disc
 
Copy content magma:Discriminant(E);
 
Copy content oscar:discriminant(E)
 
j-invariant: $j$  =  \( -\frac{6093832136609347161121}{108676727597808690} \) = $-1 \cdot 2^{-1} \cdot 3^{-1} \cdot 5^{-1} \cdot 19^{3} \cdot 167^{-7} \cdot 961339^{3}$
Copy content comment:j-invariant
 
Copy content sage:E.j_invariant().factor()
 
Copy content gp:E.j
 
Copy content magma:jInvariant(E);
 
Copy content oscar:j_invariant(E)
 
Endomorphism ring: $\mathrm{End}(E)$ = $\Z$
Geometric endomorphism ring: $\mathrm{End}(E_{\overline{\Q}})$  =  \(\Z\)    (no potential complex multiplication)
Copy content comment:Potential complex multiplication
 
Copy content sage:E.has_cm()
 
Copy content magma:HasComplexMultiplication(E);
 
Sato-Tate group: $\mathrm{ST}(E)$ = $\mathrm{SU}(2)$
Faltings height: $h_{\mathrm{Faltings}}$ ≈ $3.6547199337037616836834120962$
Copy content comment:Faltings height
 
Copy content gp:ellheight(E)
 
Copy content magma:FaltingsHeight(E);
 
Copy content oscar:faltings_height(E)
 
Stable Faltings height: $h_{\mathrm{stable}}$ ≈ $2.0656930185297888738599412956$
Copy content comment:Stable Faltings height
 
Copy content magma:StableFaltingsHeight(E);
 
Copy content oscar:stable_faltings_height(E)
 
$abc$ quality: $Q$ ≈ $0.9971440792413382$
Szpiro ratio: $\sigma_{m}$ ≈ $5.29369283662851$
Intrinsic torsion order: $\#E(\mathbb Q)_\text{tors}^\text{is}$ = $1$

BSD invariants

Analytic rank: $r_{\mathrm{an}}$ = $ 2$
Copy content comment:Analytic rank
 
Copy content sage:E.analytic_rank()
 
Copy content gp:ellanalyticrank(E)
 
Copy content magma:AnalyticRank(E);
 
Mordell-Weil rank: $r$ = $ 2$
Copy content comment:Mordell-Weil rank
 
Copy content sage:E.rank()
 
Copy content gp:[lower,upper] = ellrank(E)
 
Copy content magma:Rank(E);
 
Regulator: $\mathrm{Reg}(E/\Q)$ ≈ $57.926504191339591881290151549$
Copy content comment:Regulator
 
Copy content sage:E.regulator()
 
Copy content gp:G = E.gen \\ if available matdet(ellheightmatrix(E,G))
 
Copy content magma:Regulator(E);
 
Real period: $\Omega$ ≈ $0.019597792547161316646198286998$
Copy content comment:Real Period
 
Copy content sage:E.period_lattice().omega()
 
Copy content gp:if(E.disc>0,2,1)*E.omega[1]
 
Copy content magma:(Discriminant(E) gt 0 select 2 else 1) * RealPeriod(E);
 
Tamagawa product: $\prod_{p}c_p$ = $ 16 $  = $ 2^{2}\cdot2^{2}\cdot1\cdot1 $
Copy content comment:Tamagawa numbers
 
Copy content sage:E.tamagawa_numbers()
 
Copy content gp:gr=ellglobalred(E); [[gr[4][i,1],gr[5][i][4]] | i<-[1..#gr[4][,1]]]
 
Copy content magma:TamagawaNumbers(E);
 
Copy content oscar:tamagawa_numbers(E)
 
Torsion order: $\#E(\Q)_{\mathrm{tor}}$ = $1$
Copy content comment:Torsion order
 
Copy content sage:E.torsion_order()
 
Copy content gp:elltors(E)[1]
 
Copy content magma:Order(TorsionSubgroup(E));
 
Copy content oscar:prod(torsion_structure(E)[1])
 
Special value: $ L^{(2)}(E,1)/2!$ ≈ $18.163705793986301201588924137 $
Copy content comment:Special L-value
 
Copy content sage:r = E.rank(); E.lseries().dokchitser().derivative(1,r)/r.factorial()
 
Copy content gp:[r,L1r] = ellanalyticrank(E); L1r/r!
 
Copy content magma:Lr1 where r,Lr1 := AnalyticRank(E: Precision:=12);
 
Analytic order of Ш: Ш${}_{\mathrm{an}}$  ≈  $1$    (rounded)
Copy content comment:Order of Sha
 
Copy content sage:E.sha().an_numerical()
 
Copy content magma:MordellWeilShaInformation(E);
 

BSD formula

$$\begin{aligned} 18.163705794 \approx L^{(2)}(E,1)/2! & \overset{?}{=} \frac{\# ะจ(E/\Q)\cdot \Omega_E \cdot \mathrm{Reg}(E/\Q) \cdot \prod_p c_p}{\#E(\Q)_{\rm tor}^2} \\ & \approx \frac{1 \cdot 0.019598 \cdot 57.926504 \cdot 16}{1^2} \\ & \approx 18.163705794\end{aligned}$$

Copy content comment:BSD formula
 
Copy content sage:# self-contained SageMath code snippet for the BSD formula (checks rank, computes analytic sha) E = EllipticCurve([0, 0, 0, -219185292, -1268107303664]); r = E.rank(); ar = E.analytic_rank(); assert r == ar; Lr1 = E.lseries().dokchitser().derivative(1,r)/r.factorial(); sha = E.sha().an_numerical(); omega = E.period_lattice().omega(); reg = E.regulator(); tam = E.tamagawa_product(); tor = E.torsion_order(); assert r == ar; print("analytic sha: " + str(RR(Lr1) * tor^2 / (omega * reg * tam)))
 
Copy content magma:/* self-contained Magma code snippet for the BSD formula (checks rank, computes analytic sha) */ E := EllipticCurve([0, 0, 0, -219185292, -1268107303664]); r := Rank(E); ar,Lr1 := AnalyticRank(E: Precision := 12); assert r eq ar; sha := MordellWeilShaInformation(E); omega := RealPeriod(E) * (Discriminant(E) gt 0 select 2 else 1); reg := Regulator(E); tam := &*TamagawaNumbers(E); tor := #TorsionSubgroup(E); assert r eq ar; print "analytic sha:", Lr1 * tor^2 / (omega * reg * tam);
 

Modular invariants

Modular form 480960.2.a.eq

\( q + q^{5} - q^{7} + 2 q^{11} - 4 q^{17} - q^{19} + O(q^{20}) \) Copy content Toggle raw display

Copy content comment:q-expansion of modular form
 
Copy content sage:E.q_eigenform(20)
 
Copy content gp:Ser(ellan(E,20),q)*q
 
Copy content magma:ModularForm(E);
 

For more coefficients, see the Downloads section to the right.

Modular degree: 101154816
Copy content comment:Modular degree
 
Copy content sage:E.modular_degree()
 
Copy content gp:ellmoddegree(E)
 
Copy content magma:ModularDegree(E);
 
$ \Gamma_0(N) $-optimal: no
Manin constant: 1
Copy content comment:Manin constant
 
Copy content magma:ManinConstant(E);
 

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 $\mathrm{ord}_p(N)$ $\mathrm{ord}_p(\Delta)$ $\mathrm{ord}_p(\mathrm{den}(j))$
$2$ $4$ $I_{9}^{*}$ additive -1 6 19 1
$3$ $4$ $I_{1}^{*}$ additive -1 2 7 1
$5$ $1$ $I_{1}$ split multiplicative -1 1 1 1
$167$ $1$ $I_{7}$ nonsplit multiplicative 1 1 7 7

Copy content comment:Local data
 
Copy content sage:E.local_data()
 
Copy content gp:ellglobalred(E)[5]
 
Copy content magma:[LocalInformation(E,p) : p in BadPrimes(E)];
 
Copy content oscar:[(p,tamagawa_number(E,p), kodaira_symbol(E,p), reduction_type(E,p)) for p in bad_primes(E)]
 

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
$7$ 7B.6.3 7.24.0.2 $24$

Copy content comment:Mod p Galois image
 
Copy content sage:rho = E.galois_representation(); [rho.image_type(p) for p in rho.non_surjective()]
 
Copy content magma:[GaloisRepresentation(E,p): p in PrimesUpTo(20)];
 

Copy content comment:Adelic image of Galois representation
 
Copy content sage:gens = [[140272, 140273, 70147, 6], [117608, 7, 107513, 140274], [8, 5, 91, 57], [1, 14, 0, 1], [140267, 14, 140266, 15], [1, 0, 14, 1], [140272, 140273, 105217, 6], [35073, 100208, 70126, 115193], [84176, 7, 84161, 140274], [93512, 140273, 93527, 6]] GL(2,Integers(140280)).subgroup(gens)
 
Copy content magma:Gens := [[140272, 140273, 70147, 6], [117608, 7, 107513, 140274], [8, 5, 91, 57], [1, 14, 0, 1], [140267, 14, 140266, 15], [1, 0, 14, 1], [140272, 140273, 105217, 6], [35073, 100208, 70126, 115193], [84176, 7, 84161, 140274], [93512, 140273, 93527, 6]]; sub<GL(2,Integers(140280))|Gens>;
 

The image $H:=\rho_E(\Gal(\overline{\Q}/\Q))$ of the adelic Galois representation has level \( 140280 = 2^{3} \cdot 3 \cdot 5 \cdot 7 \cdot 167 \), index $96$, genus $2$, and generators

$\left(\begin{array}{rr} 140272 & 140273 \\ 70147 & 6 \end{array}\right),\left(\begin{array}{rr} 117608 & 7 \\ 107513 & 140274 \end{array}\right),\left(\begin{array}{rr} 8 & 5 \\ 91 & 57 \end{array}\right),\left(\begin{array}{rr} 1 & 14 \\ 0 & 1 \end{array}\right),\left(\begin{array}{rr} 140267 & 14 \\ 140266 & 15 \end{array}\right),\left(\begin{array}{rr} 1 & 0 \\ 14 & 1 \end{array}\right),\left(\begin{array}{rr} 140272 & 140273 \\ 105217 & 6 \end{array}\right),\left(\begin{array}{rr} 35073 & 100208 \\ 70126 & 115193 \end{array}\right),\left(\begin{array}{rr} 84176 & 7 \\ 84161 & 140274 \end{array}\right),\left(\begin{array}{rr} 93512 & 140273 \\ 93527 & 6 \end{array}\right)$.

Input positive integer $m$ to see the generators of the reduction of $H$ to $\mathrm{GL}_2(\Z/m\Z)$:

The torsion field $K:=\Q(E[140280])$ is a degree-$574559373376880640$ Galois extension of $\Q$ with $\Gal(K/\Q)$ isomorphic to the projection of $H$ to $\GL_2(\Z/140280\Z)$.

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 $4$ \( 7515 = 3^{2} \cdot 5 \cdot 167 \)
$3$ additive $8$ \( 53440 = 2^{6} \cdot 5 \cdot 167 \)
$5$ split multiplicative $6$ \( 96192 = 2^{6} \cdot 3^{2} \cdot 167 \)
$7$ good $2$ \( 2880 = 2^{6} \cdot 3^{2} \cdot 5 \)
$167$ nonsplit multiplicative $168$ \( 2880 = 2^{6} \cdot 3^{2} \cdot 5 \)

Isogenies

Copy content comment:Isogenies
 
Copy content gp:ellisomat(E)
 

This curve has non-trivial cyclic isogenies of degree $d$ for $d=$ 7.
Its isogeny class 480960eq consists of 2 curves linked by isogenies of degree 7.

Twists

The minimal quadratic twist of this elliptic curve is 5010h2, its twist by $24$.

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.