# Properties

 Label 102550z1 Conductor 102550 Discriminant -13461123200000000 j-invariant $$-\frac{12274557745}{34460475392}$$ CM no Rank 2 Torsion Structure $$\mathrm{Trivial}$$

# Related objects

Show commands for: Magma / SageMath / Pari/GP

## Minimal Weierstrass equation

magma: E := EllipticCurve([1, 0, 0, -3513, -5582983]); // or

magma: E := EllipticCurve("102550z1");

sage: E = EllipticCurve([1, 0, 0, -3513, -5582983]) # or

sage: E = EllipticCurve("102550z1")

gp: E = ellinit([1, 0, 0, -3513, -5582983]) \\ or

gp: E = ellinit("102550z1")

$$y^2 + x y = x^{3} - 3513 x - 5582983$$

## Mordell-Weil group structure

$$\Z^2$$

### Infinite order Mordell-Weil generators and heights

magma: Generators(E);

sage: E.gens()

 $$P$$ = $$\left(202, 1299\right)$$ $$\left(286, 3959\right)$$ $$\hat{h}(P)$$ ≈ 0.761319058382 1.03147589388

## Integral points

magma: IntegralPoints(E);

sage: E.integral_points()

$$\left(202, 1299\right)$$, $$\left(202, -1501\right)$$, $$\left(286, 3959\right)$$, $$\left(286, -4245\right)$$, $$\left(298, 4307\right)$$, $$\left(298, -4605\right)$$, $$\left(952, 28749\right)$$, $$\left(952, -29701\right)$$, $$\left(1402, 51699\right)$$, $$\left(1402, -53101\right)$$, $$\left(3802, 232499\right)$$, $$\left(3802, -236301\right)$$, $$\left(9076, 860105\right)$$, $$\left(9076, -869181\right)$$

## Invariants

 magma: Conductor(E);  sage: E.conductor().factor()  gp: ellglobalred(E)[1] Conductor: $$102550$$ = $$2 \cdot 5^{2} \cdot 7 \cdot 293$$ magma: Discriminant(E);  sage: E.discriminant().factor()  gp: E.disc Discriminant: $$-13461123200000000$$ = $$-1 \cdot 2^{13} \cdot 5^{8} \cdot 7^{2} \cdot 293^{2}$$ magma: jInvariant(E);  sage: E.j_invariant().factor()  gp: E.j j-invariant: $$-\frac{12274557745}{34460475392}$$ = $$-1 \cdot 2^{-13} \cdot 5 \cdot 7^{-2} \cdot 19^{3} \cdot 71^{3} \cdot 293^{-2}$$ Endomorphism ring: $$\Z$$ (no Complex Multiplication) Sato-Tate Group: $\mathrm{SU}(2)$

## BSD invariants

 magma: Rank(E);  sage: E.rank() Rank: $$2$$ magma: Regulator(E);  sage: E.regulator() Regulator: $$0.646189887682$$ magma: RealPeriod(E);  sage: E.period_lattice().omega()  gp: E.omega[1] Real period: $$0.180259990315$$ 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: $$156$$  = $$13\cdot3\cdot2\cdot2$$ magma: Order(TorsionSubgroup(E));  sage: E.torsion_order()  gp: elltors(E)[1] Torsion order: $$1$$ magma: MordellWeilShaInformation(E);  sage: E.sha().an_numerical() Analytic order of Ш: $$1$$ (rounded)

## Modular invariants

#### Modular form 102550.2.a.w

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)

$$q + q^{2} + q^{3} + q^{4} + q^{6} - q^{7} + q^{8} - 2q^{9} - q^{11} + q^{12} - 6q^{13} - q^{14} + q^{16} - 5q^{17} - 2q^{18} - 7q^{19} + O(q^{20})$$

 magma: ModularDegree(E);  sage: E.modular_degree() Modular degree: 836160 $$\Gamma_0(N)$$-optimal: yes 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])

$$L^{(2)}(E,1)/2!$$ ≈ $$18.1712205317$$

## Local data

This elliptic curve is not semistable.

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$$(j)_{-}$$
$$2$$ $$13$$ $$I_{13}$$ Split multiplicative -1 1 13 13
$$5$$ $$3$$ $$IV^{*}$$ Additive -1 2 8 0
$$7$$ $$2$$ $$I_{2}$$ Non-split multiplicative 1 1 2 2
$$293$$ $$2$$ $$I_{2}$$ Split multiplicative -1 1 2 2

## 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 X4.

This subgroup is the pull-back of the subgroup of $\GL(2,\Z_2/2^3\Z_2)$ generated by $\left(\begin{array}{rr} 7 & 7 \\ 0 & 1 \end{array}\right),\left(\begin{array}{rr} 5 & 0 \\ 1 & 1 \end{array}\right)$ and has index 2.

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 $$p$$ .

## $p$-adic data

### $p$-adic regulators

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

Note: $$p$$-adic regulator data only exists for primes $$p\ge5$$ of good ordinary reduction.

## 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 47 293 split ordinary add nonsplit ordinary ordinary ordinary ordinary ordinary ordinary ordinary ordinary ordinary ss ordinary split 5 2 - 2 2 2 2 2 2 2 2 2 2 2,4 2 3 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 no rational isogenies. Its isogeny class 102550z consists of this curve only.

## 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 $E(\Q)_{\rm tors}$ (which is trivial) are as follows:

$[K:\Q]$ $K$ $E(K)_{\rm tors}$ Base-change curve
3 3.1.200.1 $$\Z/2\Z$$ Not in database
6 6.0.320000.1 $$\Z/2\Z \times \Z/2\Z$$ 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.