Properties

Label 3330s3
Conductor 33303330
Discriminant 7.260×1014-7.260\times 10^{14}
j-invariant 1367594037332999995878502400 \frac{1367594037332999}{995878502400}
CM no
Rank 00
Torsion structure Z/6Z\Z/{6}\Z

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Minimal Weierstrass equation

Minimal Weierstrass equation

Simplified equation

y2+xy+y=x3x2+20812x+582167y^2+xy+y=x^3-x^2+20812x+582167 Copy content Toggle raw display (homogenize, simplify)
y2z+xyz+yz2=x3x2z+20812xz2+582167z3y^2z+xyz+yz^2=x^3-x^2z+20812xz^2+582167z^3 Copy content Toggle raw display (dehomogenize, simplify)
y2=x3+332997x+37591702y^2=x^3+332997x+37591702 Copy content Toggle raw display (homogenize, minimize)

comment: Define the curve
 
sage: E = EllipticCurve([1, -1, 1, 20812, 582167])
 
gp: E = ellinit([1, -1, 1, 20812, 582167])
 
magma: E := EllipticCurve([1, -1, 1, 20812, 582167]);
 
oscar: E = elliptic_curve([1, -1, 1, 20812, 582167])
 
sage: E.short_weierstrass_model()
 
magma: WeierstrassModel(E);
 
oscar: short_weierstrass_model(E)
 

Mordell-Weil group structure

Z/6Z\Z/{6}\Z

magma: MordellWeilGroup(E);
 

Mordell-Weil generators

PPh^(P)\hat{h}(P)Order
(333,6493)(333, 6493)0066

Integral points

(27,13) \left(-27, 13\right) , (37,1165) \left(37, 1165\right) , (37,1203) \left(37, -1203\right) , (333,6493) \left(333, 6493\right) , (333,6827) \left(333, -6827\right) Copy content Toggle raw display

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

Invariants

Conductor: NN  =  3330 3330  = 2325372 \cdot 3^{2} \cdot 5 \cdot 37
comment: Conductor
 
sage: E.conductor().factor()
 
gp: ellglobalred(E)[1]
 
magma: Conductor(E);
 
oscar: conductor(E)
 
Discriminant: Δ\Delta  =  725995428249600-725995428249600 = 12183752373-1 \cdot 2^{18} \cdot 3^{7} \cdot 5^{2} \cdot 37^{3}
comment: Discriminant
 
sage: E.discriminant().factor()
 
gp: E.disc
 
magma: Discriminant(E);
 
oscar: discriminant(E)
 
j-invariant: jj  =  1367594037332999995878502400 \frac{1367594037332999}{995878502400}  = 218315273373101315732^{-18} \cdot 3^{-1} \cdot 5^{-2} \cdot 7^{3} \cdot 37^{-3} \cdot 101^{3} \cdot 157^{3}
comment: j-invariant
 
sage: E.j_invariant().factor()
 
gp: E.j
 
magma: jInvariant(E);
 
oscar: j_invariant(E)
 
Endomorphism ring: End(E)\mathrm{End}(E) = Z\Z
Geometric endomorphism ring: End(EQ)\mathrm{End}(E_{\overline{\Q}})  =  Z\Z    (no potential complex multiplication)
sage: E.has_cm()
 
magma: HasComplexMultiplication(E);
 
Sato-Tate group: ST(E)\mathrm{ST}(E) = SU(2)\mathrm{SU}(2)
Faltings height: hFaltingsh_{\mathrm{Faltings}} ≈ 1.53987563184858079988779042011.5398756318485807998877904201
gp: ellheight(E)
 
magma: FaltingsHeight(E);
 
oscar: faltings_height(E)
 
Stable Faltings height: hstableh_{\mathrm{stable}} ≈ 0.990569487514525954190167801640.99056948751452595419016780164
magma: StableFaltingsHeight(E);
 
oscar: stable_faltings_height(E)
 
abcabc quality: QQ ≈ 0.99160713134651070.9916071313465107
Szpiro ratio: σm\sigma_{m} ≈ 5.1097145998022175.109714599802217

BSD invariants

Analytic rank: ranr_{\mathrm{an}} = 0 0
sage: E.analytic_rank()
 
gp: ellanalyticrank(E)
 
magma: AnalyticRank(E);
 
Mordell-Weil rank: rr = 0 0
comment: Rank
 
sage: E.rank()
 
gp: [lower,upper] = ellrank(E)
 
magma: Rank(E);
 
Regulator: Reg(E/Q)\mathrm{Reg}(E/\Q) = 11
comment: Regulator
 
sage: E.regulator()
 
G = E.gen \\ if available
 
matdet(ellheightmatrix(E,G))
 
magma: Regulator(E);
 
Real period: Ω\Omega ≈ 0.322860811620070158639342922710.32286081162007015863934292271
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: pcp\prod_{p}c_p = 216 216  = (232)223 ( 2 \cdot 3^{2} )\cdot2\cdot2\cdot3
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)tor\#E(\Q)_{\mathrm{tor}} = 66
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) L(E,1) ≈ 1.93716486972042095183605753631.9371648697204209518360575363
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: Шan{}_{\mathrm{an}}  =  11    (exact)
comment: Order of Sha
 
sage: E.sha().an_numerical()
 
magma: MordellWeilShaInformation(E);
 

BSD formula

1.937164870L(E,1)=#Ш(E/Q)ΩEReg(E/Q)pcp#E(Q)tor210.3228611.000000216621.937164870\displaystyle 1.937164870 \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 0.322861 \cdot 1.000000 \cdot 216}{6^2} \approx 1.937164870

# 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   3330.2.a.m

q+q2+q4q54q7+q8q106q11+2q134q14+q16+6q17+2q19+O(q20) q + q^{2} + q^{4} - q^{5} - 4 q^{7} + q^{8} - q^{10} - 6 q^{11} + 2 q^{13} - 4 q^{14} + q^{16} + 6 q^{17} + 2 q^{19} + O(q^{20}) Copy content Toggle raw display

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: 24192
comment: Modular degree
 
sage: E.modular_degree()
 
gp: ellmoddegree(E)
 
magma: ModularDegree(E);
 
Γ0(N) \Gamma_0(N) -optimal: no
Manin constant: 1
comment: Manin constant
 
magma: ManinConstant(E);
 

Local data at primes of bad reduction

This elliptic curve is not semistable. There are 4 primes pp of bad reduction:

pp Tamagawa number Kodaira symbol Reduction type Root number ordp(N)\mathrm{ord}_p(N) ordp(Δ)\mathrm{ord}_p(\Delta) ordp(den(j))\mathrm{ord}_p(\mathrm{den}(j))
22 1818 I18I_{18} split multiplicative -1 1 18 18
33 22 I1I_{1}^{*} additive -1 2 7 1
55 22 I2I_{2} nonsplit multiplicative 1 1 2 2
3737 33 I3I_{3} split multiplicative -1 1 3 3

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
22 2B 2.3.0.1
33 3B.1.1 3.8.0.1

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 = [[4429, 12, 4428, 13], [1777, 12, 1782, 73], [730, 4437, 2987, 8], [1, 0, 12, 1], [1, 6, 6, 37], [2221, 12, 6, 73], [4090, 3, 4053, 4432], [195, 928, 158, 917], [1, 12, 0, 1], [11, 2, 4390, 4431]]
 
GL(2,Integers(4440)).subgroup(gens)
 
Gens := [[4429, 12, 4428, 13], [1777, 12, 1782, 73], [730, 4437, 2987, 8], [1, 0, 12, 1], [1, 6, 6, 37], [2221, 12, 6, 73], [4090, 3, 4053, 4432], [195, 928, 158, 917], [1, 12, 0, 1], [11, 2, 4390, 4431]];
 
sub<GL(2,Integers(4440))|Gens>;
 

The image H:=ρE(Gal(Q/Q))H:=\rho_E(\Gal(\overline{\Q}/\Q)) of the adelic Galois representation has level 4440=233537 4440 = 2^{3} \cdot 3 \cdot 5 \cdot 37 , index 9696, genus 11, and generators

(442912442813),(177712178273),(730443729878),(10121),(16637),(222112673),(4090340534432),(195928158917),(11201),(11243904431)\left(\begin{array}{rr} 4429 & 12 \\ 4428 & 13 \end{array}\right),\left(\begin{array}{rr} 1777 & 12 \\ 1782 & 73 \end{array}\right),\left(\begin{array}{rr} 730 & 4437 \\ 2987 & 8 \end{array}\right),\left(\begin{array}{rr} 1 & 0 \\ 12 & 1 \end{array}\right),\left(\begin{array}{rr} 1 & 6 \\ 6 & 37 \end{array}\right),\left(\begin{array}{rr} 2221 & 12 \\ 6 & 73 \end{array}\right),\left(\begin{array}{rr} 4090 & 3 \\ 4053 & 4432 \end{array}\right),\left(\begin{array}{rr} 195 & 928 \\ 158 & 917 \end{array}\right),\left(\begin{array}{rr} 1 & 12 \\ 0 & 1 \end{array}\right),\left(\begin{array}{rr} 11 & 2 \\ 4390 & 4431 \end{array}\right).

Input positive integer mm to see the generators of the reduction of HH to GL2(Z/mZ)\mathrm{GL}_2(\Z/m\Z):

The torsion field K:=Q(E[4440])K:=\Q(E[4440]) is a degree-671726960640671726960640 Galois extension of Q\Q with Gal(K/Q)\Gal(K/\Q) isomorphic to the projection of HH to GL2(Z/4440Z)\GL_2(\Z/4440\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
22 split multiplicative 44 333=3237 333 = 3^{2} \cdot 37
33 additive 88 5 5
55 nonsplit multiplicative 66 666=23237 666 = 2 \cdot 3^{2} \cdot 37
3737 split multiplicative 3838 90=2325 90 = 2 \cdot 3^{2} \cdot 5

Isogenies

gp: ellisomat(E)
 

This curve has non-trivial cyclic isogenies of degree dd for d=d= 2, 3 and 6.
Its isogeny class 3330s consists of 4 curves linked by isogenies of degrees dividing 6.

Twists

The minimal quadratic twist of this elliptic curve is 1110h3, its twist by 3-3.

Growth of torsion in number fields

The number fields KK of degree less than 24 such that E(K)torsE(K)_{\rm tors} is strictly larger than E(Q)torsE(\Q)_{\rm tors} Z/6Z\cong \Z/{6}\Z are as follows:

[K:Q][K:\Q] KK E(K)torsE(K)_{\rm tors} Base change curve
22 Q(111)\Q(\sqrt{-111}) Z/2ZZ/6Z\Z/2\Z \oplus \Z/6\Z not in database
44 4.2.177600.2 Z/12Z\Z/12\Z not in database
66 6.0.110716875.1 Z/3ZZ/6Z\Z/3\Z \oplus \Z/6\Z not in database
88 8.0.388626024960000.4 Z/2ZZ/12Z\Z/2\Z \oplus \Z/12\Z not in database
88 deg 8 Z/2ZZ/12Z\Z/2\Z \oplus \Z/12\Z not in database
99 9.3.23009606018865601875.2 Z/18Z\Z/18\Z not in database
1212 deg 12 Z/6ZZ/6Z\Z/6\Z \oplus \Z/6\Z not in database
1616 deg 16 Z/24Z\Z/24\Z not in database
1818 18.0.80453472189064372086033767513314188230859375.2 Z/2ZZ/18Z\Z/2\Z \oplus \Z/18\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

pp 2 3 5 37
Reduction type split add nonsplit split
λ\lambda-invariant(s) 2 - 0 1
μ\mu-invariant(s) 0 - 0 0

All Iwasawa λ\lambda and μ\mu-invariants for primes p5p\ge 5 of good reduction are zero.

An entry - indicates that the invariants are not computed because the reduction is additive.

pp-adic regulators

All pp-adic regulators are identically 11 since the rank is 00.