LMFDB - Elliptic curve with LMFDB label 473280.ff3 (Cremona label 473280ff6)

Show commands: Magma / Oscar / PariGP / SageMath

Simplified equation

$y^2=x^3+x^2-507841x+637356095$ y^2=x^3+x^2-507841x+637356095	(homogenize, simplify)
$y^2z=x^3+x^2z-507841xz^2+637356095z^3$ y^2z=x^3+x^2z-507841xz^2+637356095z^3	(dehomogenize, simplify)
$y^2=x^3-41135148x+464755998672$ y^2=x^3-41135148x+464755998672	(homogenize, minimize)

comment: Define the curve

sage: E = EllipticCurve([0, 1, 0, -507841, 637356095])

gp: E = ellinit([0, 1, 0, -507841, 637356095])

magma: E := EllipticCurve([0, 1, 0, -507841, 637356095]);

oscar: E = elliptic_curve([0, 1, 0, -507841, 637356095])

sage: E.short_weierstrass_model()

magma: WeierstrassModel(E);

oscar: short_weierstrass_model(E)

Mordell-Weil generators

$P$	$\hat{h}(P)$	Order
$(-1055, 0)$	$0$	$2$

Integral points

$\left(-1055, 0\right)$ (-1055, 0)

comment: Integral points

sage: E.integral_points()

magma: IntegralPoints(E);

Invariants

Conductor:	$N$	=	$473280$	=	$2^{6} \cdot 3 \cdot 5 \cdot 17 \cdot 29$	comment: Conductor sage: E.conductor().factor() gp: ellglobalred(E)[1] magma: Conductor(E); oscar: conductor(E)
Discriminant:	$\Delta$	=	$-167199159491041689600$	=	$-1 \cdot 2^{18} \cdot 3 \cdot 5^{2} \cdot 17 \cdot 29^{8}$	comment: Discriminant sage: E.discriminant().factor() gp: E.disc magma: Discriminant(E); oscar: discriminant(E)
j-invariant:	$j$	=	$-\frac{55254534707337841}{637814176525275}$	=	$-1 \cdot 3^{-1} \cdot 5^{-2} \cdot 17^{-1} \cdot 29^{-8} \cdot 380881^{3}$	comment: j-invariant sage: E.j_invariant().factor() gp: E.j magma: jInvariant(E); oscar: j_invariant(E)
Endomorphism ring:	$\mathrm{End}(E)$	=	$\Z$
Geometric endomorphism ring:	$\mathrm{End}(E_{\overline{\Q}})$	=	$\Z$ (no potential complex multiplication)			sage: E.has_cm() magma: HasComplexMultiplication(E);
Sato-Tate group:	$\mathrm{ST}(E)$	=	$\mathrm{SU}(2)$
Faltings height:	$h_{\mathrm{Faltings}}$	≈	$2.5624000048453144883364873189$			gp: ellheight(E) magma: FaltingsHeight(E); oscar: faltings_height(E)
Stable Faltings height:	$h_{\mathrm{stable}}$	≈	$1.5226792340053965242106391367$			magma: StableFaltingsHeight(E); oscar: stable_faltings_height(E)
$abc$ quality:	$Q$	≈	$0.9617188194449721$
Szpiro ratio:	$\sigma_{m}$	≈	$4.137715163991348$

BSD invariants

Analytic rank:	$r_{\mathrm{an}}$	=	$0$	sage: E.analytic_rank() gp: ellanalyticrank(E) magma: AnalyticRank(E);
Mordell-Weil rank:	$r$	=	$0$	comment: Rank sage: E.rank() gp: [lower,upper] = ellrank(E) magma: Rank(E);
Regulator:	$\mathrm{Reg}(E/\Q)$	=	$1$	comment: Regulator sage: E.regulator() G = E.gen \\ if available matdet(ellheightmatrix(E,G)) magma: Regulator(E);
Real period:	$\Omega$	≈	$0.15411697425163605204151718475$	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);
Tamagawa product:	$\prod_{p}c_p$	=	$8$ = $2\cdot1\cdot2\cdot1\cdot2$	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)
Torsion order:	$\#E(\Q)_{\mathrm{tor}}$	=	$2$	comment: Torsion order sage: E.torsion_order() gp: elltors(E)[1] magma: Order(TorsionSubgroup(E)); oscar: prod(torsion_structure(E)[1])
Special value:	$L(E,1)$	≈	$4.9317431760523536653285499119$	comment: Special L-value r = E.rank(); E.lseries().dokchitser().derivative(1,r)/r.factorial() gp: [r,L1r] = ellanalyticrank(E); L1r/r! magma: Lr1 where r,Lr1 := AnalyticRank(E: Precision:=12);
Analytic order of Ш:	Ш ${}_{\mathrm{an}}$	=	$16$ = $4^2$ (exact)	comment: Order of Sha sage: E.sha().an_numerical() magma: MordellWeilShaInformation(E);

$\displaystyle 4.931743176 \approx L(E,1) = \frac{\# Ш(E/\Q)\cdot \Omega_E \cdot \mathrm{Reg}(E/\Q) \cdot \prod_p c_p}{\#E(\Q)_{\rm tor}^2} \approx \frac{16 \cdot 0.154117 \cdot 1.000000 \cdot 8}{2^2} \approx 4.931743176$

# self-contained SageMath code snippet for the BSD formula (checks rank, computes analytic sha)

E = EllipticCurve(%s); 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)))

/* self-contained Magma code snippet for the BSD formula (checks rank, computes analytic sha) */

E := EllipticCurve(%s); 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 473280.2.a.ff

q + q^{3} - q^{5} + q^{9} + 4 q^{11} + 2 q^{13} - q^{15} + q^{17} + 4 q^{19} + O(q^{20})

comment: q-expansion of modular form

sage: E.q_eigenform(20)

\\ actual modular form, use for small N

[mf,F] = mffromell(E)

Ser(mfcoefs(mf,20),q)

\\ or just the series

Ser(ellan(E,20),q)*q

magma: ModularForm(E);

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

Modular degree:	14680064	comment: Modular degree sage: E.modular_degree() gp: ellmoddegree(E) magma: ModularDegree(E);
$\Gamma_0(N)$ -optimal:	no
Manin constant:	1 (conditional^*)	comment: Manin constant magma: ManinConstant(E);

^* The Manin constant is correct provided that curve 473280.ff5 is optimal.

Local data at primes of bad reduction

This elliptic curve is not semistable. There are 5 primes $p$ of bad reduction:

$p$	Tamagawa number	Kodaira symbol	Reduction type	Root number	$\mathrm{ord}_p(N)$	$\mathrm{ord}_p(\Delta)$	$\mathrm{ord}_p(\mathrm{den}(j))$
$2$	$2$	$I_{8}^{*}$	additive	-1	6	18	0
$3$	$1$	$I_{1}$	split multiplicative	-1	1	1	1
$5$	$2$	$I_{2}$	nonsplit multiplicative	1	1	2	2
$17$	$1$	$I_{1}$	split multiplicative	-1	1	1	1
$29$	$2$	$I_{8}$	nonsplit multiplicative	1	1	8	8

comment: Local data

sage: E.local_data()

gp: ellglobalred(E)[5]

magma: [LocalInformation(E,p) : p in BadPrimes(E)];

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
$2$	2B	8.24.0.97

comment: mod p Galois image

sage: rho = E.galois_representation(); [rho.image_type(p) for p in rho.non_surjective()]

magma: [GaloisRepresentation(E,p): p in PrimesUpTo(20)];

gens = [[1, 16, 0, 1], [47341, 16, 23408, 118005], [1, 0, 16, 1], [118307, 118304, 29836, 29895], [65281, 16, 48968, 129], [48736, 5, 62595, 118306], [39448, 1, 78959, 10], [5, 4, 118316, 118317], [15, 2, 118222, 118307], [14777, 118304, 44626, 29895], [118305, 16, 118304, 17]]

GL(2,Integers(118320)).subgroup(gens)

Gens := [[1, 16, 0, 1], [47341, 16, 23408, 118005], [1, 0, 16, 1], [118307, 118304, 29836, 29895], [65281, 16, 48968, 129], [48736, 5, 62595, 118306], [39448, 1, 78959, 10], [5, 4, 118316, 118317], [15, 2, 118222, 118307], [14777, 118304, 44626, 29895], [118305, 16, 118304, 17]];

sub<GL(2,Integers(118320))|Gens>;

The image $H:=\rho_E(\Gal(\overline{\Q}/\Q))$ of the adelic Galois representation has level $118320 = 2^{4} \cdot 3 \cdot 5 \cdot 17 \cdot 29$ , index $192$ , genus $1$ , and generators

$\left(\begin{array}{rr} 1 & 16 \\ 0 & 1 \end{array}\right),\left(\begin{array}{rr} 47341 & 16 \\ 23408 & 118005 \end{array}\right),\left(\begin{array}{rr} 1 & 0 \\ 16 & 1 \end{array}\right),\left(\begin{array}{rr} 118307 & 118304 \\ 29836 & 29895 \end{array}\right),\left(\begin{array}{rr} 65281 & 16 \\ 48968 & 129 \end{array}\right),\left(\begin{array}{rr} 48736 & 5 \\ 62595 & 118306 \end{array}\right),\left(\begin{array}{rr} 39448 & 1 \\ 78959 & 10 \end{array}\right),\left(\begin{array}{rr} 5 & 4 \\ 118316 & 118317 \end{array}\right),\left(\begin{array}{rr} 15 & 2 \\ 118222 & 118307 \end{array}\right),\left(\begin{array}{rr} 14777 & 118304 \\ 44626 & 29895 \end{array}\right),\left(\begin{array}{rr} 118305 & 16 \\ 118304 & 17 \end{array}\right)$ .

The torsion field $K:=\Q(E[118320])$ is a degree- $157575666047385600$ Galois extension of $\Q$ with $\Gal(K/\Q)$ isomorphic to the projection of $H$ to $\GL_2(\Z/118320\Z)$ .

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	$2$	$51 = 3 \cdot 17$
$3$	split multiplicative	$4$	$157760 = 2^{6} \cdot 5 \cdot 17 \cdot 29$
$5$	nonsplit multiplicative	$6$	$94656 = 2^{6} \cdot 3 \cdot 17 \cdot 29$
$17$	split multiplicative	$18$	$27840 = 2^{6} \cdot 3 \cdot 5 \cdot 29$
$29$	nonsplit multiplicative	$30$	$16320 = 2^{6} \cdot 3 \cdot 5 \cdot 17$

$p$ -adic regulators

All $p$ -adic regulators are identically $1$ since the rank is $0$ .

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Minimal Weierstrass equation

Minimal Weierstrass equation

Simplified equation

Mordell-Weil group structure

Mordell-Weil generators

Integral points

Invariants

BSD invariants

BSD formula

Modular invariants

Local data at primes of bad reduction

Galois representations

Isogenies

Twists

Iwasawa invariants

$p$ -adic regulators

This project is supported by grants from the US National Science Foundation, the UK Engineering and Physical Sciences Research Council, and the Simons Foundation.

Label	473280.ff3

Conductor	$473280$
Discriminant	$-1.672\times 10^{20}$
j-invariant	$-\frac{55254534707337841}{637814176525275}$
CM	no
Rank	$0$
Torsion structure	$\Z/{2}\Z$

Properties

Related objects

Downloads

Learn more

Mordell-Weil group structure

Invariants

Local data at primes of bad reduction

ppp-adic regulators

This project is supported by grants from the US National Science Foundation, the UK Engineering and Physical Sciences Research Council, and the Simons Foundation.

$p$ -adic regulators