Base field \(\Q(\sqrt{-301}) \)
Generator \(a\), with minimal polynomial \( x^{2} + 301 \); class number \(8\).
Weierstrass equation
This is not a global minimal model: it is minimal at all primes except \((7,a)\). No global minimal model exists.
Mordell-Weil group structure
Not computed ($ 1 \le r \le 2 $)
Mordell-Weil generators
Only 1 non-torsion generator is known.
| $P$ | $\hat{h}(P)$ | Order |
|---|---|---|
| $\left(-\frac{312463}{1682} : \frac{310781}{3364} a + \frac{41307}{97556} : 1\right)$ | $7.0144143340292381702111744635373934445$ | $\infty$ |
| $\left(-\frac{743}{4} : \frac{739}{8} a : 1\right)$ | $0$ | $2$ |
Invariants
| Conductor: | $\frak{N}$ | = | \((14,a+7)\) | = | \((2,a+1)\cdot(7,a)\) |
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| Conductor norm: | $N(\frak{N})$ | = | \( 14 \) | = | \(2\cdot7\) |
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| Discriminant: | $\Delta$ | = | $2951578112$ | ||
| Discriminant ideal: | $(\Delta)$ | = | \((2951578112)\) | = | \((2,a+1)^{18}\cdot(7,a)^{16}\) |
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| Discriminant norm: | $N(\Delta)$ | = | \( 8711813351237484544 \) | = | \(2^{18}\cdot7^{16}\) |
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| Minimal discriminant: | $\frak{D}_{\mathrm{min}}$ | = | \((25088)\) | = | \((2,a+1)^{18}\cdot(7,a)^{4}\) |
| Minimal discriminant norm: | $N(\frak{D}_{\mathrm{min}})$ | = | \( 629407744 \) | = | \(2^{18}\cdot7^{4}\) |
| j-invariant: | $j$ | = | \( \frac{2251439055699625}{25088} \) | ||
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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: | $\mathrm{ST}(E)$ | = | $\mathrm{SU}(2)$ | ||
BSD invariants
| Analytic rank: | $r_{\mathrm{an}}$ | = | \( 2 \) |
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| Mordell-Weil rank: | $r?$ | \(1 \le r \le 2\) | |
| Regulator: | $\mathrm{Reg}(E/K)$ | ≈ | not available |
| Néron-Tate Regulator: | $\mathrm{Reg}_{\mathrm{NT}}(E/K)$ | ≈ | not available |
| Global period: | $\Omega(E/K)$ | ≈ | \( 1.750834270388010790998569979249046268 \) |
| Tamagawa product: | $\prod_{\frak{p}}c_{\frak{p}}$ | = | \( 36 \) = \(( 2 \cdot 3^{2} )\cdot2\) |
| Torsion order: | $\#E(K)_{\mathrm{tor}}$ | = | \(2\) |
| Special value: | $L^{(r)}(E/K,1)/r!$ | ≈ | \( 19.464449135251869840140012325960396596 \) |
| Analytic order of Ш: | Ш${}_{\mathrm{an}}$ | = | not available |
Local data at primes of bad reduction
This elliptic curve is semistable. There are 2 primes $\frak{p}$ of bad reduction. Primes of good reduction for the curve but which divide the discriminant of the model above (if any) are included.
| $\mathfrak{p}$ | $N(\mathfrak{p})$ | Tamagawa number | Kodaira symbol | Reduction type | Root number | \(\mathrm{ord}_{\mathfrak{p}}(\mathfrak{N}\)) | \(\mathrm{ord}_{\mathfrak{p}}(\mathfrak{D}_{\mathrm{min}}\)) | \(\mathrm{ord}_{\mathfrak{p}}(\mathrm{den}(j))\) |
|---|---|---|---|---|---|---|---|---|
| \((2,a+1)\) | \(2\) | \(18\) | \(I_{18}\) | Split multiplicative | \(-1\) | \(1\) | \(18\) | \(18\) |
| \((7,a)\) | \(7\) | \(2\) | \(I_{4}\) | Non-split multiplicative | \(1\) | \(1\) | \(4\) | \(4\) |
Galois Representations
The mod \( p \) Galois Representation has maximal image for all primes \( p < 1000 \) except those listed.
| prime | Image of Galois Representation |
|---|---|
| \(2\) | 2B |
| \(3\) | 3Cs |
Isogenies and isogeny class
This curve has non-trivial cyclic isogenies of degree \(d\) for \(d=\)
2, 3, 6, 9 and 18.
Its isogeny class
14.1-c
consists of curves linked by isogenies of
degrees dividing 18.
Base change
This elliptic curve is a \(\Q\)-curve. It is the base change of the following 2 elliptic curves:
| Base field | Curve |
|---|---|
| \(\Q\) | 784.b1 |
| \(\Q\) | 25886.d1 |