Bill Allombert on Fri, 04 Nov 2022 22:25:11 +0100

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pari-2.15.1 (STABLE) released

Dear PARI lovers,

I would like to announce the release of pari-2.15.1 (STABLE). The sources
and Windows and MacOS binaries are available from

This is a BUGFIX release for the stable branch.
This release addresses 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.

For the first time, binaries for ARM-based Mac are available, thanks to the
hardware provided by the Sagemath project, donations made to, and technical support from William Stein.


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, Aurel and Karim

P.S: The Changelog:

Bug numbers refer to the BTS at

Done for version 2.15.1 (released 02/11/2022):
BA   1- ploth long help was misformatted                                    [F1]
     2- polredbest(y^4 - y^3 - 1/4, 1) -> Error [#2414]                     [F2]
     3- mathnf over polynomial rings: wrong when rank not maximal [#2415]   [F3]
BA   4- seralgdep(Ser([0,1,0,u]*Mod(1,(u^2+u+1)*Mod(1,2)),y),2,2) -> SEGV   [F4]
     5- polroots(4*x^3+4*x^2+28*x+144) -> overflow [#2418]                  [F5]
     6- conversion to float of t_QUAD with t_FRAC components [#2419]        [F6]
     7- bnfinit(x^3-810693844986180*x-30702939461011257135364,1).fu
        -> wrong result or SEGV [#2420]                                     [F7]
     8- [1,2]*[3,4] -> strange error message about qfbcomp                  [F8]
     9- obscure oo loop in solve when solution ~ 0 [#2412]                  [F9]