John Cremona on Mon, 22 Oct 2012 22:02:22 +0200

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Re: New elldata package update (conductor up to 300000)

Many thanks to Bill, whose almost instantaneous response whenever I send him an update is very impressive (and means that Sage always gets in first, well before either Magma or Sage!).


On 22 October 2012 20:58, Bill Allombert <> wrote:
Dear PARI users,

It is my pleasure to announce that John Cremona has reached a major milestone
and extend his Elliptic Curve Data to all conductors <300000.

I have updated the PARI package elldata to match.

This package contains elliptic curves defined over the rationals representing
all isogeny classes for all conductor at most 300000. Theses data are needed by
ellsearch, ellidentify and ellgenerators and require PARI/GP 2.2.11 and up.

The package can be downloaded from

Thanks to John for providing this very useful database.