Minimal Weierstrass equation
Minimal Weierstrass equation
Simplified equation
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\(y^2+xy+y=x^3+x^2-300x+717\)
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(homogenize, simplify) |
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\(y^2z+xyz+yz^2=x^3+x^2z-300xz^2+717z^3\)
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(dehomogenize, simplify) |
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\(y^2=x^3-388827x+39293046\)
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(homogenize, minimize) |
Mordell-Weil group structure
\(\Z \oplus \Z/{2}\Z\)
Mordell-Weil generators
| $P$ | $\hat{h}(P)$ | Order |
|---|---|---|
| $(-3, 41)$ | $0.23588272632029023366538958673$ | $\infty$ |
| $(-19, 9)$ | $0$ | $2$ |
Integral points
\( \left(-19, 9\right) \), \( \left(-15, 53\right) \), \( \left(-15, -39\right) \), \( \left(-3, 41\right) \), \( \left(-3, -39\right) \), \( \left(17, 21\right) \), \( \left(17, -39\right) \), \( \left(27, 101\right) \), \( \left(27, -129\right) \), \( \left(165, 2033\right) \), \( \left(165, -2199\right) \)
Invariants
| Conductor: | $N$ | = | \( 4830 \) | = | $2 \cdot 3 \cdot 5 \cdot 7 \cdot 23$ |
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| Discriminant: | $\Delta$ | = | $1421952000$ | = | $2^{10} \cdot 3 \cdot 5^{3} \cdot 7 \cdot 23^{2} $ |
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| j-invariant: | $j$ | = | \( \frac{2986606123201}{1421952000} \) | = | $2^{-10} \cdot 3^{-1} \cdot 5^{-3} \cdot 7^{-1} \cdot 23^{-2} \cdot 14401^{3}$ |
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| Endomorphism ring: | $\mathrm{End}(E)$ | = | $\Z$ | |||
| Geometric endomorphism ring: | $\mathrm{End}(E_{\overline{\Q}})$ | = | \(\Z\) (no potential complex multiplication) |
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| Sato-Tate group: | $\mathrm{ST}(E)$ | = | $\mathrm{SU}(2)$ | |||
| Faltings height: | $h_{\mathrm{Faltings}}$ | ≈ | $0.45023868255688428449323658432$ |
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| Stable Faltings height: | $h_{\mathrm{stable}}$ | ≈ | $0.45023868255688428449323658432$ |
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| $abc$ quality: | $Q$ | ≈ | $0.9103137555231284$ | |||
| Szpiro ratio: | $\sigma_{m}$ | ≈ | $3.386361831044103$ | |||
BSD invariants
| Analytic rank: | $r_{\mathrm{an}}$ | = | $ 1$ |
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| Mordell-Weil rank: | $r$ | = | $ 1$ |
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| Regulator: | $\mathrm{Reg}(E/\Q)$ | ≈ | $0.23588272632029023366538958673$ |
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| Real period: | $\Omega$ | ≈ | $1.3521051414722862740099181575$ |
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| Tamagawa product: | $\prod_{p}c_p$ | = | $ 60 $ = $ ( 2 \cdot 5 )\cdot1\cdot3\cdot1\cdot2 $ |
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| Torsion order: | $\#E(\Q)_{\mathrm{tor}}$ | = | $2$ |
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| Special value: | $ L'(E,1)$ | ≈ | $4.7840737056324691720226349160 $ |
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| Analytic order of Ш: | Ш${}_{\mathrm{an}}$ | ≈ | $1$ (rounded) |
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BSD formula
$$\begin{aligned} 4.784073706 \approx L'(E,1) & = \frac{\# ะจ(E/\Q)\cdot \Omega_E \cdot \mathrm{Reg}(E/\Q) \cdot \prod_p c_p}{\#E(\Q)_{\rm tor}^2} \\ & \approx \frac{1 \cdot 1.352105 \cdot 0.235883 \cdot 60}{2^2} \\ & \approx 4.784073706\end{aligned}$$
Modular invariants
For more coefficients, see the Downloads section to the right.
| Modular degree: | 3840 |
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| $ \Gamma_0(N) $-optimal: | yes | |
| Manin constant: | 1 |
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Local data at primes of bad reduction
This elliptic curve is semistable. There are 5 primes $p$ of bad reduction:
| $p$ | Tamagawa number | Kodaira symbol | Reduction type | Root number | $\mathrm{ord}_p(N)$ | $\mathrm{ord}_p(\Delta)$ | $\mathrm{ord}_p(\mathrm{den}(j))$ |
|---|---|---|---|---|---|---|---|
| $2$ | $10$ | $I_{10}$ | split multiplicative | -1 | 1 | 10 | 10 |
| $3$ | $1$ | $I_{1}$ | nonsplit multiplicative | 1 | 1 | 1 | 1 |
| $5$ | $3$ | $I_{3}$ | split multiplicative | -1 | 1 | 3 | 3 |
| $7$ | $1$ | $I_{1}$ | nonsplit multiplicative | 1 | 1 | 1 | 1 |
| $23$ | $2$ | $I_{2}$ | nonsplit multiplicative | 1 | 1 | 2 | 2 |
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 |
|---|---|---|
| $2$ | 2B | 2.3.0.1 |
The image $H:=\rho_E(\Gal(\overline{\Q}/\Q))$ of the adelic Galois representation has level \( 19320 = 2^{3} \cdot 3 \cdot 5 \cdot 7 \cdot 23 \), index $12$, genus $0$, and generators
$\left(\begin{array}{rr} 1 & 2 \\ 2 & 5 \end{array}\right),\left(\begin{array}{rr} 1 & 4 \\ 0 & 1 \end{array}\right),\left(\begin{array}{rr} 9661 & 4 \\ 2 & 9 \end{array}\right),\left(\begin{array}{rr} 5522 & 1 \\ 16559 & 0 \end{array}\right),\left(\begin{array}{rr} 7249 & 12076 \\ 16904 & 2415 \end{array}\right),\left(\begin{array}{rr} 6442 & 1 \\ 6439 & 0 \end{array}\right),\left(\begin{array}{rr} 19317 & 4 \\ 19316 & 5 \end{array}\right),\left(\begin{array}{rr} 1 & 0 \\ 4 & 1 \end{array}\right),\left(\begin{array}{rr} 11594 & 1 \\ 3863 & 0 \end{array}\right),\left(\begin{array}{rr} 3 & 4 \\ 8 & 11 \end{array}\right),\left(\begin{array}{rr} 6721 & 4 \\ 13442 & 9 \end{array}\right)$.
The torsion field $K:=\Q(E[19320])$ is a degree-$1588427552194560$ Galois extension of $\Q$ with $\Gal(K/\Q)$ isomorphic to the projection of $H$ to $\GL_2(\Z/19320\Z)$.
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 |
|---|---|---|---|
| $2$ | split multiplicative | $4$ | \( 105 = 3 \cdot 5 \cdot 7 \) |
| $3$ | nonsplit multiplicative | $4$ | \( 322 = 2 \cdot 7 \cdot 23 \) |
| $5$ | split multiplicative | $6$ | \( 483 = 3 \cdot 7 \cdot 23 \) |
| $7$ | nonsplit multiplicative | $8$ | \( 690 = 2 \cdot 3 \cdot 5 \cdot 23 \) |
| $23$ | nonsplit multiplicative | $24$ | \( 210 = 2 \cdot 3 \cdot 5 \cdot 7 \) |
Isogenies
This curve has non-trivial cyclic isogenies of degree $d$ for $d=$
2.
Its isogeny class 4830v
consists of 2 curves linked by isogenies of
degree 2.
Twists
This elliptic curve is its own minimal quadratic twist.
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:
| $[K:\Q]$ | $K$ | $E(K)_{\rm tors}$ | Base change curve |
|---|---|---|---|
| $2$ | \(\Q(\sqrt{105}) \) | \(\Z/2\Z \oplus \Z/2\Z\) | not in database |
| $4$ | 4.0.3554880.1 | \(\Z/4\Z\) | 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 |
| $8$ | 8.2.1904396123174832.4 | \(\Z/6\Z\) | 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.
Iwasawa invariants
| $p$ | 2 | 3 | 5 | 7 | 11 | 13 | 17 | 19 | 23 | 29 | 31 | 37 | 41 | 43 | 47 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Reduction type | split | nonsplit | split | nonsplit | ord | ord | ord | ord | nonsplit | ord | ord | ord | ord | ord | ord |
| $\lambda$-invariant(s) | 4 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| $\mu$-invariant(s) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
$p$-adic regulators
Note: $p$-adic regulator data only exists for primes $p\ge 5$ of good ordinary reduction.