# Properties

 Label 6930o3 Conductor 6930 Discriminant -79594839843750000 j-invariant $$-\frac{918468938249433649}{109183593750000}$$ CM no Rank 1 Torsion Structure $$\Z/{6}\Z$$

# Related objects

Show commands for: Magma / SageMath / Pari/GP

## Minimal Weierstrass equation

magma: E := EllipticCurve([1, -1, 0, -182259, 32927013]); // or

magma: E := EllipticCurve("6930o3");

sage: E = EllipticCurve([1, -1, 0, -182259, 32927013]) # or

sage: E = EllipticCurve("6930o3")

gp: E = ellinit([1, -1, 0, -182259, 32927013]) \\ or

gp: E = ellinit("6930o3")

$$y^2 + x y = x^{3} - x^{2} - 182259 x + 32927013$$

## Mordell-Weil group structure

$$\Z\times \Z/{6}\Z$$

### Infinite order Mordell-Weil generator and height

magma: Generators(E);

sage: E.gens()

 $$P$$ = $$\left(-258, 8049\right)$$ $$\hat{h}(P)$$ ≈ 1.27519677206

## Torsion generators

magma: TorsionSubgroup(E);

sage: E.torsion_subgroup().gens()

gp: elltors(E)

$$\left(402, 4749\right)$$

## Integral points

magma: IntegralPoints(E);

sage: E.integral_points()

$$\left(-498, 249\right)$$, $$\left(-258, 8049\right)$$, $$\left(-258, -7791\right)$$, $$\left(-123, 7374\right)$$, $$\left(-123, -7251\right)$$, $$\left(127, 3374\right)$$, $$\left(127, -3501\right)$$, $$\left(178, 2381\right)$$, $$\left(178, -2559\right)$$, $$\left(237, 1614\right)$$, $$\left(237, -1851\right)$$, $$\left(402, 4749\right)$$, $$\left(402, -5151\right)$$, $$\left(1002, 28749\right)$$, $$\left(1002, -29751\right)$$

## Invariants

 magma: Conductor(E);  sage: E.conductor().factor()  gp: ellglobalred(E)[1] Conductor: $$6930$$ = $$2 \cdot 3^{2} \cdot 5 \cdot 7 \cdot 11$$ magma: Discriminant(E);  sage: E.discriminant().factor()  gp: E.disc Discriminant: $$-79594839843750000$$ = $$-1 \cdot 2^{4} \cdot 3^{7} \cdot 5^{12} \cdot 7 \cdot 11^{3}$$ magma: jInvariant(E);  sage: E.j_invariant().factor()  gp: E.j j-invariant: $$-\frac{918468938249433649}{109183593750000}$$ = $$-1 \cdot 2^{-4} \cdot 3^{-1} \cdot 5^{-12} \cdot 7^{-1} \cdot 11^{-3} \cdot 13^{3} \cdot 23^{3} \cdot 3251^{3}$$ Endomorphism ring: $$\Z$$ (no Complex Multiplication) Sato-Tate Group: $\mathrm{SU}(2)$

## BSD invariants

 magma: Rank(E);  sage: E.rank() Rank: $$1$$ magma: Regulator(E);  sage: E.regulator() Regulator: $$1.27519677206$$ magma: RealPeriod(E);  sage: E.period_lattice().omega()  gp: E.omega[1] Real period: $$0.333155767767$$ magma: TamagawaNumbers(E);  sage: E.tamagawa_numbers()  gp: gr=ellglobalred(E); [[gr[4][i,1],gr[5][i][4]] | i<-[1..#gr[4][,1]]] Tamagawa product: $$288$$  = $$2\cdot2^{2}\cdot( 2^{2} \cdot 3 )\cdot1\cdot3$$ magma: Order(TorsionSubgroup(E));  sage: E.torsion_order()  gp: elltors(E)[1] Torsion order: $$6$$ magma: MordellWeilShaInformation(E);  sage: E.sha().an_numerical() Analytic order of Ш: $$1$$ (exact)

## Modular invariants

#### Modular form6930.2.a.q

magma: ModularForm(E);

sage: E.q_eigenform(20)

gp: xy = elltaniyama(E);

gp: x*deriv(xy[1])/(2*xy[2]+E.a1*xy[1]+E.a3)

$$q - q^{2} + q^{4} + q^{5} + q^{7} - q^{8} - q^{10} + q^{11} + 2q^{13} - q^{14} + q^{16} - 6q^{17} - 4q^{19} + O(q^{20})$$

 magma: ModularDegree(E);  sage: E.modular_degree() Modular degree: 82944 $$\Gamma_0(N)$$-optimal: no Manin constant: 1

#### Special L-value

magma: Lr1 where r,Lr1 := AnalyticRank(E: Precision:=12);

sage: r = E.rank();

sage: E.lseries().dokchitser().derivative(1,r)/r.factorial()

gp: ar = ellanalyticrank(E);

gp: ar[2]/factorial(ar[1])

$$L'(E,1)$$ ≈ $$3.39871327721$$

## Local data

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

sage: E.local_data()

gp: ellglobalred(E)[5]

prime Tamagawa number Kodaira symbol Reduction type Root number ord($$N$$) ord($$\Delta$$) ord$$(j)_{-}$$
$$2$$ $$2$$ $$I_{4}$$ Non-split multiplicative 1 1 4 4
$$3$$ $$4$$ $$I_1^{*}$$ Additive -1 2 7 1
$$5$$ $$12$$ $$I_{12}$$ Split multiplicative -1 1 12 12
$$7$$ $$1$$ $$I_{1}$$ Split multiplicative -1 1 1 1
$$11$$ $$3$$ $$I_{3}$$ Split multiplicative -1 1 3 3

## Galois representations

The image of the 2-adic representation attached to this elliptic curve is the subgroup of $\GL(2,\Z_2)$ with Rouse label X13.

This subgroup is the pull-back of the subgroup of $\GL(2,\Z_2/2^2\Z_2)$ generated by $\left(\begin{array}{rr} 3 & 0 \\ 0 & 1 \end{array}\right),\left(\begin{array}{rr} 1 & 1 \\ 0 & 1 \end{array}\right),\left(\begin{array}{rr} 3 & 0 \\ 0 & 3 \end{array}\right)$ and has index 6.

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

sage: rho = E.galois_representation();

sage: [rho.image_type(p) for p in rho.non_surjective()]

The mod $$p$$ Galois representation has maximal image $$\GL(2,\F_p)$$ for all primes $$p$$ except those listed.

prime Image of Galois representation
$$2$$ B
$$3$$ B.1.1

## $p$-adic data

### $p$-adic regulators

sage: [E.padic_regulator(p) for p in primes(3,20) if E.conductor().valuation(p)<2]

$$p$$-adic regulators are not yet computed for curves that are not $$\Gamma_0$$-optimal.

## Iwasawa invariants

 $p$ Reduction type $\lambda$-invariant(s) $\mu$-invariant(s) 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 nonsplit add split split split ordinary ordinary ordinary ss ordinary ordinary ordinary ordinary ordinary ss 4 - 2 2 2 1 1 3 1,1 1 1 1 1 1 1,1 0 - 0 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.

## Isogenies

This curve has non-trivial cyclic isogenies of degree $$d$$ for $$d=$$ 2, 3, 4, 6 and 12.
Its isogeny class 6930o consists of 8 curves linked by isogenies of degrees dividing 12.

## Growth of torsion in number fields

The number fields $K$ of degree up to 7 such that $E(K)_{\rm tors}$ is strictly larger than $E(\Q)_{\rm tors}$ $\cong \Z/{6}\Z$ are as follows:

$[K:\Q]$ $K$ $E(K)_{\rm tors}$ Base-change curve
2 $$\Q(\sqrt{21})$$ $$\Z/12\Z$$ Not in database
$$\Q(\sqrt{-231})$$ $$\Z/2\Z \times \Z/6\Z$$ Not in database
$$\Q(\sqrt{-11})$$ $$\Z/12\Z$$ Not in database
4 $$\Q(\sqrt{-11}, \sqrt{21})$$ $$\Z/2\Z \times \Z/12\Z$$ Not in database
6 6.0.6805279152.4 $$\Z/3\Z \times \Z/6\Z$$ Not in database

We only show fields where the torsion growth is primitive. For each field $K$ we either show its label, or a defining polynomial when $K$ is not in the database.