Properties

Label 4410bb5
Conductor 44104410
Discriminant 2.895×10122.895\times 10^{12}
j-invariant 265616619904933750 \frac{2656166199049}{33750}
CM no
Rank 00
Torsion structure Z/2Z\Z/{2}\Z

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Minimal Weierstrass equation

Minimal Weierstrass equation

Simplified equation

y2+xy+y=x3x2127238x+17500767y^2+xy+y=x^3-x^2-127238x+17500767 Copy content Toggle raw display (homogenize, simplify)
y2z+xyz+yz2=x3x2z127238xz2+17500767z3y^2z+xyz+yz^2=x^3-x^2z-127238xz^2+17500767z^3 Copy content Toggle raw display (dehomogenize, simplify)
y2=x32035803x+1118013302y^2=x^3-2035803x+1118013302 Copy content Toggle raw display (homogenize, minimize)

comment: Define the curve
 
sage: E = EllipticCurve([1, -1, 1, -127238, 17500767])
 
gp: E = ellinit([1, -1, 1, -127238, 17500767])
 
magma: E := EllipticCurve([1, -1, 1, -127238, 17500767]);
 
oscar: E = elliptic_curve([1, -1, 1, -127238, 17500767])
 
sage: E.short_weierstrass_model()
 
magma: WeierstrassModel(E);
 
oscar: short_weierstrass_model(E)
 

Mordell-Weil group structure

Z/2Z\Z/{2}\Z

magma: MordellWeilGroup(E);
 

Mordell-Weil generators

PPh^(P)\hat{h}(P)Order
(827/4,831/8)(827/4, -831/8)0022

Integral points

None

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

Invariants

Conductor: NN  =  4410 4410  = 2325722 \cdot 3^{2} \cdot 5 \cdot 7^{2}
comment: Conductor
 
sage: E.conductor().factor()
 
gp: ellglobalred(E)[1]
 
magma: Conductor(E);
 
oscar: conductor(E)
 
Discriminant: Δ\Delta  =  28946065837502894606583750 = 23954762 \cdot 3^{9} \cdot 5^{4} \cdot 7^{6}
comment: Discriminant
 
sage: E.discriminant().factor()
 
gp: E.disc
 
magma: Discriminant(E);
 
oscar: discriminant(E)
 
j-invariant: jj  =  265616619904933750 \frac{2656166199049}{33750}  = 213354113125932^{-1} \cdot 3^{-3} \cdot 5^{-4} \cdot 11^{3} \cdot 1259^{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}} ≈ 1.53712105974400833284191869331.5371210597440083328419186933
gp: ellheight(E)
 
magma: FaltingsHeight(E);
 
oscar: faltings_height(E)
 
Stable Faltings height: hstableh_{\mathrm{stable}} ≈ 0.0148598408822968345916197031160.014859840882296834591619703116
magma: StableFaltingsHeight(E);
 
oscar: stable_faltings_height(E)
 
abcabc quality: QQ ≈ 1.05017408953159541.0501740895315954
Szpiro ratio: σm\sigma_{m} ≈ 5.5859278499118285.585927849911828

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 ≈ 0.731455077311886607220235011760.73145507731188660722023501176
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 = 16 16  = 12222 1\cdot2^{2}\cdot2\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)tor\#E(\Q)_{\mathrm{tor}} = 22
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) ≈ 2.92582030924754642888094004712.9258203092475464288809400471
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

2.925820309L(E,1)=#Ш(E/Q)ΩEReg(E/Q)pcp#E(Q)tor210.7314551.00000016222.925820309\displaystyle 2.925820309 \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 0.731455 \cdot 1.000000 \cdot 16}{2^2} \approx 2.925820309

# 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   4410.2.a.z

q+q2+q4q5+q8q102q13+q16+6q17+4q19+O(q20) q + q^{2} + q^{4} - q^{5} + q^{8} - q^{10} - 2 q^{13} + q^{16} + 6 q^{17} + 4 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: 18432
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 11 I1I_{1} split multiplicative -1 1 1 1
33 44 I3I_{3}^{*} additive -1 2 9 3
55 22 I4I_{4} nonsplit multiplicative 1 1 4 4
77 22 I0I_0^{*} additive -1 2 6 0

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 4.6.0.1
33 3B 3.4.0.1

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 = [[337, 504, 84, 169], [1, 12, 12, 145], [246, 49, 35, 176], [15, 106, 374, 11], [694, 483, 735, 274], [817, 24, 816, 25], [104, 399, 385, 454], [599, 0, 0, 839], [1, 24, 0, 1], [1, 0, 24, 1]]
 
GL(2,Integers(840)).subgroup(gens)
 
Gens := [[337, 504, 84, 169], [1, 12, 12, 145], [246, 49, 35, 176], [15, 106, 374, 11], [694, 483, 735, 274], [817, 24, 816, 25], [104, 399, 385, 454], [599, 0, 0, 839], [1, 24, 0, 1], [1, 0, 24, 1]];
 
sub<GL(2,Integers(840))|Gens>;
 

The image H:=ρE(Gal(Q/Q))H:=\rho_E(\Gal(\overline{\Q}/\Q)) of the adelic Galois representation has level 840=23357 840 = 2^{3} \cdot 3 \cdot 5 \cdot 7 , index 384384, genus 55, and generators

(33750484169),(11212145),(2464935176),(1510637411),(694483735274),(8172481625),(104399385454),(59900839),(12401),(10241)\left(\begin{array}{rr} 337 & 504 \\ 84 & 169 \end{array}\right),\left(\begin{array}{rr} 1 & 12 \\ 12 & 145 \end{array}\right),\left(\begin{array}{rr} 246 & 49 \\ 35 & 176 \end{array}\right),\left(\begin{array}{rr} 15 & 106 \\ 374 & 11 \end{array}\right),\left(\begin{array}{rr} 694 & 483 \\ 735 & 274 \end{array}\right),\left(\begin{array}{rr} 817 & 24 \\ 816 & 25 \end{array}\right),\left(\begin{array}{rr} 104 & 399 \\ 385 & 454 \end{array}\right),\left(\begin{array}{rr} 599 & 0 \\ 0 & 839 \end{array}\right),\left(\begin{array}{rr} 1 & 24 \\ 0 & 1 \end{array}\right),\left(\begin{array}{rr} 1 & 0 \\ 24 & 1 \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[840])K:=\Q(E[840]) is a degree-185794560185794560 Galois extension of Q\Q with Gal(K/Q)\Gal(K/\Q) isomorphic to the projection of HH to GL2(Z/840Z)\GL_2(\Z/840\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 44 441=3272 441 = 3^{2} \cdot 7^{2}
33 additive 22 490=2572 490 = 2 \cdot 5 \cdot 7^{2}
55 nonsplit multiplicative 66 882=23272 882 = 2 \cdot 3^{2} \cdot 7^{2}
77 additive 2626 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, 4, 6 and 12.
Its isogeny class 4410bb consists of 8 curves linked by isogenies of degrees dividing 12.

Twists

The minimal quadratic twist of this elliptic curve is 30a5, its twist by 2121.

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/2Z\cong \Z/{2}\Z are as follows:

[K:Q][K:\Q] KK E(K)torsE(K)_{\rm tors} Base change curve
22 Q(6)\Q(\sqrt{6}) Z/2ZZ/2Z\Z/2\Z \oplus \Z/2\Z not in database
22 Q(42)\Q(\sqrt{42}) Z/4Z\Z/4\Z not in database
22 Q(7)\Q(\sqrt{7}) Z/4Z\Z/4\Z not in database
22 Q(21)\Q(\sqrt{21}) Z/6Z\Z/6\Z 2.2.21.1-300.1-a7
44 Q(6,7)\Q(\sqrt{6}, \sqrt{7}) Z/2ZZ/4Z\Z/2\Z \oplus \Z/4\Z not in database
44 Q(6,14)\Q(\sqrt{6}, \sqrt{14}) Z/2ZZ/6Z\Z/2\Z \oplus \Z/6\Z not in database
44 Q(2,21)\Q(\sqrt{2}, \sqrt{21}) Z/12Z\Z/12\Z not in database
44 Q(3,7)\Q(\sqrt{3}, \sqrt{7}) Z/12Z\Z/12\Z not in database
66 6.0.30870000.1 Z/6Z\Z/6\Z not in database
88 8.0.7341411926016.66 Z/2ZZ/4Z\Z/2\Z \oplus \Z/4\Z not in database
88 8.8.509820272640000.18 Z/8Z\Z/8\Z not in database
88 8.0.4480842240000.53 Z/8Z\Z/8\Z not in database
88 8.8.12745506816.1 Z/2ZZ/12Z\Z/2\Z \oplus \Z/12\Z not in database
1212 12.0.8576612100000000.1 Z/3ZZ/6Z\Z/3\Z \oplus \Z/6\Z not in database
1212 deg 12 Z/2ZZ/6Z\Z/2\Z \oplus \Z/6\Z not in database
1212 deg 12 Z/12Z\Z/12\Z not in database
1212 deg 12 Z/12Z\Z/12\Z not in database
1616 deg 16 Z/4ZZ/4Z\Z/4\Z \oplus \Z/4\Z not in database
1616 deg 16 Z/2ZZ/8Z\Z/2\Z \oplus \Z/8\Z not in database
1616 deg 16 Z/2ZZ/8Z\Z/2\Z \oplus \Z/8\Z not in database
1616 deg 16 Z/2ZZ/12Z\Z/2\Z \oplus \Z/12\Z not in database
1616 deg 16 Z/24Z\Z/24\Z not in database
1616 deg 16 Z/24Z\Z/24\Z not in database
1818 18.6.22432814539197891882146100000000.1 Z/18Z\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 7
Reduction type split add nonsplit add
λ\lambda-invariant(s) 5 - 0 -
μ\mu-invariant(s) 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.