Minimal Weierstrass equation
Minimal Weierstrass equation
Simplified equation
|
\(y^2=x^3-x^2+512392x-1365910788\)
|
(homogenize, simplify) |
|
\(y^2z=x^3-x^2z+512392xz^2-1365910788z^3\)
|
(dehomogenize, simplify) |
|
\(y^2=x^3+41503725x-995624453250\)
|
(homogenize, minimize) |
Mordell-Weil group structure
\(\Z/{2}\Z\)
Mordell-Weil generators
| $P$ | $\hat{h}(P)$ | Order |
|---|---|---|
| $(957, 0)$ | $0$ | $2$ |
Integral points
\( \left(957, 0\right) \)
Invariants
| Conductor: | $N$ | = | \( 421800 \) | = | $2^{3} \cdot 3 \cdot 5^{2} \cdot 19 \cdot 37$ |
|
| Discriminant: | $\Delta$ | = | $-814395814942032000000$ | = | $-1 \cdot 2^{10} \cdot 3^{4} \cdot 5^{6} \cdot 19^{8} \cdot 37 $ |
|
| j-invariant: | $j$ | = | \( \frac{929843593713212}{50899738433877} \) | = | $2^{2} \cdot 3^{-4} \cdot 19^{-8} \cdot 37^{-1} \cdot 61487^{3}$ |
|
| Endomorphism ring: | $\mathrm{End}(E)$ | = | $\Z$ | |||
| Geometric endomorphism ring: | $\mathrm{End}(E_{\overline{\Q}})$ | = | \(\Z\) (no potential complex multiplication) |
|
||
| Sato-Tate group: | $\mathrm{ST}(E)$ | = | $\mathrm{SU}(2)$ | |||
| Faltings height: | $h_{\mathrm{Faltings}}$ | ≈ | $2.6920938338234393284634511977$ |
|
||
| Stable Faltings height: | $h_{\mathrm{stable}}$ | ≈ | $1.3097522271397680499820447632$ |
|
||
| $abc$ quality: | $Q$ | ≈ | $0.9854979810419444$ | |||
| Szpiro ratio: | $\sigma_{m}$ | ≈ | $4.292143306794599$ | |||
BSD invariants
| Analytic rank: | $r_{\mathrm{an}}$ | = | $ 0$ |
|
| Mordell-Weil rank: | $r$ | = | $ 0$ |
|
| Regulator: | $\mathrm{Reg}(E/\Q)$ | = | $1$ |
|
| Real period: | $\Omega$ | ≈ | $0.075957817246279600850802073747$ |
|
| Tamagawa product: | $\prod_{p}c_p$ | = | $ 64 $ = $ 2\cdot2\cdot2\cdot2^{3}\cdot1 $ |
|
| Torsion order: | $\#E(\Q)_{\mathrm{tor}}$ | = | $2$ |
|
| Special value: | $ L(E,1)$ | ≈ | $1.2153250759404736136128331799 $ |
|
| Analytic order of Ш: | Ш${}_{\mathrm{an}}$ | = | $1$ (exact) |
|
BSD formula
$$\begin{aligned} 1.215325076 \approx L(E,1) & = \frac{\# ะจ(E/\Q)\cdot \Omega_E \cdot \mathrm{Reg}(E/\Q) \cdot \prod_p c_p}{\#E(\Q)_{\rm tor}^2} \\ & \approx \frac{1 \cdot 0.075958 \cdot 1.000000 \cdot 64}{2^2} \\ & \approx 1.215325076\end{aligned}$$
Modular invariants
Modular form 421800.2.a.r
For more coefficients, see the Downloads section to the right.
| Modular degree: | 13631488 |
|
| $ \Gamma_0(N) $-optimal: | no | |
| Manin constant: | 1 |
|
Local data at primes of bad reduction
This elliptic curve is not semistable. There are 5 primes $p$ of bad reduction:
| $p$ | Tamagawa number | Kodaira symbol | Reduction type | Root number | $\mathrm{ord}_p(N)$ | $\mathrm{ord}_p(\Delta)$ | $\mathrm{ord}_p(\mathrm{den}(j))$ |
|---|---|---|---|---|---|---|---|
| $2$ | $2$ | $III^{*}$ | additive | 1 | 3 | 10 | 0 |
| $3$ | $2$ | $I_{4}$ | nonsplit multiplicative | 1 | 1 | 4 | 4 |
| $5$ | $2$ | $I_0^{*}$ | additive | 1 | 2 | 6 | 0 |
| $19$ | $8$ | $I_{8}$ | split multiplicative | -1 | 1 | 8 | 8 |
| $37$ | $1$ | $I_{1}$ | nonsplit multiplicative | 1 | 1 | 1 | 1 |
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 | 8.24.0.91 |
The image $H:=\rho_E(\Gal(\overline{\Q}/\Q))$ of the adelic Galois representation has level \( 56240 = 2^{4} \cdot 5 \cdot 19 \cdot 37 \), index $192$, genus $1$, and generators
$\left(\begin{array}{rr} 56225 & 16 \\ 56224 & 17 \end{array}\right),\left(\begin{array}{rr} 5 & 4 \\ 56236 & 56237 \end{array}\right),\left(\begin{array}{rr} 15 & 2 \\ 56142 & 56227 \end{array}\right),\left(\begin{array}{rr} 1 & 16 \\ 0 & 1 \end{array}\right),\left(\begin{array}{rr} 34056 & 33745 \\ 43855 & 22506 \end{array}\right),\left(\begin{array}{rr} 11261 & 33760 \\ 8700 & 8761 \end{array}\right),\left(\begin{array}{rr} 41441 & 33760 \\ 39080 & 45121 \end{array}\right),\left(\begin{array}{rr} 49226 & 25315 \\ 52255 & 5726 \end{array}\right),\left(\begin{array}{rr} 1 & 0 \\ 16 & 1 \end{array}\right),\left(\begin{array}{rr} 33743 & 0 \\ 0 & 56239 \end{array}\right)$.
The torsion field $K:=\Q(E[56240])$ is a degree-$13783837232332800$ Galois extension of $\Q$ with $\Gal(K/\Q)$ isomorphic to the projection of $H$ to $\GL_2(\Z/56240\Z)$.
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 |
|---|---|---|---|
| $2$ | additive | $2$ | \( 925 = 5^{2} \cdot 37 \) |
| $3$ | nonsplit multiplicative | $4$ | \( 140600 = 2^{3} \cdot 5^{2} \cdot 19 \cdot 37 \) |
| $5$ | additive | $14$ | \( 16872 = 2^{3} \cdot 3 \cdot 19 \cdot 37 \) |
| $19$ | split multiplicative | $20$ | \( 22200 = 2^{3} \cdot 3 \cdot 5^{2} \cdot 37 \) |
| $37$ | nonsplit multiplicative | $38$ | \( 11400 = 2^{3} \cdot 3 \cdot 5^{2} \cdot 19 \) |
Isogenies
This curve has non-trivial cyclic isogenies of degree $d$ for $d=$
2, 4 and 8.
Its isogeny class 421800r
consists of 6 curves linked by isogenies of
degrees dividing 8.
Twists
The minimal quadratic twist of this elliptic curve is 16872e4, its twist by $5$.
Iwasawa invariants
No Iwasawa invariant data is available for this curve.
$p$-adic regulators
All $p$-adic regulators are identically $1$ since the rank is $0$.