Bill Allombert on Sun, 30 Mar 2014 20:14:38 +0200

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New elldata package update (conductor up to 340000)

Dear PARI users,

John Cremona has extended his Elliptic Curve Data to all conductors < 340000

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 340000. 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.
At this point the package is a bit large, we might want to provide a smaller
version for conductors <=100000 (or <=200000).

If diskspace is an issue, you can compress all the elldata/ell*
files using gzip, GP is able to read gziped files.