# Properties

 Label 369600.u1 Conductor $369600$ Discriminant $145711104000$ j-invariant $$\frac{77860436}{17787}$$ CM no Rank $2$ Torsion structure $$\Z/{2}\Z$$

# Learn more

Show commands: Magma / Pari/GP / SageMath

## Minimal Weierstrass equation

sage: E = EllipticCurve([0, -1, 0, -1793, -22143])

gp: E = ellinit([0, -1, 0, -1793, -22143])

magma: E := EllipticCurve([0, -1, 0, -1793, -22143]);

## Simplified equation

 $$y^2=x^3-x^2-1793x-22143$$ y^2=x^3-x^2-1793x-22143 (homogenize, simplify) $$y^2z=x^3-x^2z-1793xz^2-22143z^3$$ y^2z=x^3-x^2z-1793xz^2-22143z^3 (dehomogenize, simplify) $$y^2=x^3-145260x-16578000$$ y^2=x^3-145260x-16578000 (homogenize, minimize)

## Mordell-Weil group structure

$$\Z \oplus \Z \oplus \Z/{2}\Z$$

### Infinite order Mordell-Weil generators and heights

sage: E.gens()

magma: Generators(E);

 $P$ = $$\left(-23, 80\right)$$ (-23, 80) $$\left(57, 240\right)$$ (57, 240) $\hat{h}(P)$ ≈ $1.0651651562639040756706839136$ $1.8430954389454319001888773178$

## Torsion generators

sage: E.torsion_subgroup().gens()

gp: elltors(E)

magma: TorsionSubgroup(E);

$$\left(-33, 0\right)$$

## Integral points

sage: E.integral_points()

magma: IntegralPoints(E);

$$\left(-33, 0\right)$$, $$(-29,\pm 68)$$, $$(-23,\pm 80)$$, $$(-17,\pm 56)$$, $$(48,\pm 9)$$, $$(57,\pm 240)$$, $$(121,\pm 1232)$$, $$(352,\pm 6545)$$

## Invariants

 sage: E.conductor().factor()  gp: ellglobalred(E)[1]  magma: Conductor(E); Conductor: $$369600$$ = $2^{6} \cdot 3 \cdot 5^{2} \cdot 7 \cdot 11$ sage: E.discriminant().factor()  gp: E.disc  magma: Discriminant(E); Discriminant: $145711104000$ = $2^{16} \cdot 3 \cdot 5^{3} \cdot 7^{2} \cdot 11^{2}$ sage: E.j_invariant().factor()  gp: E.j  magma: jInvariant(E); j-invariant: $$\frac{77860436}{17787}$$ = $2^{2} \cdot 3^{-1} \cdot 7^{-2} \cdot 11^{-2} \cdot 269^{3}$ Endomorphism ring: $\Z$ Geometric endomorphism ring: $$\Z$$ (no potential complex multiplication) Sato-Tate group: $\mathrm{SU}(2)$ Faltings height: $0.85456415524223987471950831853\dots$ Stable Faltings height: $-0.47199156361287896482032434339\dots$

## BSD invariants

 sage: E.rank()  magma: Rank(E); Analytic rank: $2$ sage: E.regulator()  magma: Regulator(E); Regulator: $1.9627527103006864094068838324\dots$ sage: E.period_lattice().omega()  gp: E.omega[1]  magma: RealPeriod(E); Real period: $0.74568086710559452491589239153\dots$ sage: E.tamagawa_numbers()  gp: gr=ellglobalred(E); [[gr[4][i,1],gr[5][i][4]] | i<-[1..#gr[4][,1]]]  magma: TamagawaNumbers(E); Tamagawa product: $32$  = $2^{2}\cdot1\cdot2\cdot2\cdot2$ sage: E.torsion_order()  gp: elltors(E)[1]  magma: Order(TorsionSubgroup(E)); Torsion order: $2$ sage: E.sha().an_numerical()  magma: MordellWeilShaInformation(E); Analytic order of Ш: $1$ (rounded) sage: r = E.rank(); sage: E.lseries().dokchitser().derivative(1,r)/r.factorial()  gp: ar = ellanalyticrank(E); gp: ar[2]/factorial(ar[1])  magma: Lr1 where r,Lr1 := AnalyticRank(E: Precision:=12); Special value: $L^{(2)}(E,1)/2!$ ≈ $11.708697143446972899465785952$

## Modular invariants

Modular form 369600.2.a.u

sage: E.q_eigenform(20)

gp: xy = elltaniyama(E);

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

magma: ModularForm(E);

$$q - q^{3} - q^{7} + q^{9} - q^{11} - 4 q^{13} - 2 q^{17} - 4 q^{19} + O(q^{20})$$

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

 sage: E.modular_degree()  magma: ModularDegree(E); Modular degree: 294912 $\Gamma_0(N)$-optimal: no Manin constant: 1

## Local data

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

sage: E.local_data()

gp: ellglobalred(E)[5]

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

prime Tamagawa number Kodaira symbol Reduction type Root number ord($N$) ord($\Delta$) ord$(j)_{-}$
$2$ $4$ $I_{6}^{*}$ Additive 1 6 16 0
$3$ $1$ $I_{1}$ Non-split multiplicative 1 1 1 1
$5$ $2$ $III$ Additive -1 2 3 0
$7$ $2$ $I_{2}$ Non-split multiplicative 1 1 2 2
$11$ $2$ $I_{2}$ Non-split multiplicative 1 1 2 2

## Galois representations

sage: rho = E.galois_representation();

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

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

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 2.3.0.1

## $p$-adic regulators

sage: [E.padic_regulator(p) for p in primes(5,20) if E.conductor().valuation(p)<2]

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

No Iwasawa invariant data is available for this curve.

## Isogenies

This curve has non-trivial cyclic isogenies of degree $d$ for $d=$ 2.
Its isogeny class 369600.u consists of 2 curves linked by isogenies of degree 2.

## Growth of torsion in number fields

The number fields $K$ of degree less than 24 such that $E(K)_{\rm tors}$ is strictly larger than $E(\Q)_{\rm tors}$ $\cong \Z/{2}\Z$ are as follows:

 $[K:\Q]$ $E(K)_{\rm tors}$ Base change curve $K$ $2$ $$\Q(\sqrt{15})$$ $$\Z/2\Z \oplus \Z/2\Z$$ Not in database $4$ 4.0.142296000.2 $$\Z/4\Z$$ Not in database $8$ Deg 8 $$\Z/2\Z \oplus \Z/4\Z$$ Not in database $8$ Deg 8 $$\Z/2\Z \oplus \Z/4\Z$$ Not in database $8$ Deg 8 $$\Z/6\Z$$ Not in database $16$ Deg 16 $$\Z/8\Z$$ Not in database $16$ Deg 16 $$\Z/2\Z \oplus \Z/6\Z$$ 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.