Bill Allombert on Fri, 17 Apr 2020 15:55:24 +0200

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pari-2.11.4 (STABLE) released

Dear PARI lovers,

I would like to announce the release of pari-2.11.4 (STABLE). The sources
and Windows and MacOS binaries are available from

This is a BUGFIX release for the stable branch.
This release addresses a regression introduced in 2.11.3 that affected Sagemath
and other significant problems that could be fixed in a simple, harmless
way. However we strongly encourage you to upgrade since it fixes a
number of cases where PARI was returning an incorrect result.

We would like to dedicate this release to Peter Montgomery who sadly passed
away last February. Peter was a long time PARI developer and a number of
algorithms he invented are implemented in PARI, initially by himself in
most cases.


Thanks to all those who reported problems, on the mailing lists or through
our Bug Tracking System. ( See ), or
who tested the preleases.

Have fun,

  Bill and Karim

P.S: The Changelog:

Bug numbers refer to the BTS at

Done for version 2.11.4 (released 17/04/2020):
    1- [from 2.11.3] bnfisunit could return wrong sign [#2208]
BA  2- factor((x-1)*(x-y)^2) --> oo-loop                                   [F62]
BA  3- ellap could fail with division by 0                                 [F63]
    4- wrong results in bnfsunit [#2207]                                   [F64]
    5- problems with gequal(t_SER or t_POL with inexact coefs or constant  [F65]
        wrt. some variables). E.g. S=x+O(x^2);T=S+O(y); S == T -> 0 [#2188]
MW  6- mateigen would sometime return eigenvalues instead of eigenvectors  [F67]
AE  7- [libpari] FpX_oneroot_split could fail for deg 2 and 3.             [F68]
BA  8- [pthread] Fix potential crashes when cancelling threads.            [F69]