Re: PARI/GP wrong on 7!!+7+1 being not prime, or oeis.org/Mathematica?

Andreas Enge on Sat, 30 Aug 2025 10:26:31 +0200

[Date Prev] [Date Next] [Thread Prev] [Thread Next] [Date Index] [Thread Index]

Re: PARI/GP wrong on 7!!+7+1 being not prime, or oeis.org/Mathematica?

To: Vincent Delecroix <vincent.delecroix@u-bordeaux.fr>
Subject: Re: PARI/GP wrong on 7!!+7+1 being not prime, or oeis.org/Mathematica?
From: Andreas Enge <andreas.enge@inria.fr>
Date: Sat, 30 Aug 2025 10:26:27 +0200
Authentication-results: mail3-relais-sop.national.inria.fr; dkim=none (message not signed) header.i=none; spf=SoftFail smtp.mailfrom=andreas.enge@inria.fr; dmarc=fail (p=none dis=none) d=inria.fr
Cc: pari-users@pari.math.u-bordeaux.fr
Delivery-date: Sat, 30 Aug 2025 10:26:32 +0200
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=inria.fr; s=dc; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=Jqh1+mGEpl+VpieooXvIJzDhU+r1ucBpA4WcXnumlko=; b=i/Gh3ZutkQgypGGtCHiGc3Gu6lEqccES4lGBfxrPwelkSVdd090n8bK9 4zrs3vYtpyxXMnDAKEvWVmxBv+o0zrp1Zf7yJrObEQW0WAe7a4Ohl9Kni JkwtU00cl8YXpG/9Udldd/w6GgbZtRFguvk5MZTaXrDbqwUbLi0N1kbML E=;
In-reply-to: <9fb048a2-7b26-4cf3-83f6-36bf70840f3a@u-bordeaux.fr>
References: <147f7756bbcb46d77e1c67c39d8aeedd@stamm-wilbrandt.de> <7250951a-4d0e-4188-a347-83e7dd886e18@isolution.nl> <56bd0c72-210e-4221-b8ea-bd482edfa068@u-bordeaux.fr> <19e0b0a296bba10e8a54a95b283c8ef2@stamm-wilbrandt.de> <aLCZBWHPSkzMWUa6@seventeen> <m3o6rz5m2t.fsf@lugabout.jhcloos.org> <9fb048a2-7b26-4cf3-83f6-36bf70840f3a@u-bordeaux.fr>

Am Fri, Aug 29, 2025 at 10:22:03PM +0200 schrieb Vincent Delecroix:
> Note that GMP does
>   mpz_mfac_uiui (mpz_t rop, unsigned long int n, unsigned long int m)
> Though I do not know whether it could easily be called with a
> PARI integer from the gp interpreter.

It could, by adding it to PariTwine:
   https://www.multiprecision.org/paritwine/

Andreas

References:
- PARI/GP wrong on 7!!+7+1 being not prime, or oeis.org/Mathematica?
  - From: hermann@stamm-wilbrandt.de
- Re: PARI/GP wrong on 7!!+7+1 being not prime, or oeis.org/Mathematica?
  - From: "Ruud H.G. van Tol" <rvtol@isolution.nl>
- Re: PARI/GP wrong on 7!!+7+1 being not prime, or oeis.org/Mathematica?
  - From: Vincent Delecroix <vincent.delecroix@u-bordeaux.fr>
- Re: PARI/GP wrong on 7!!+7+1 being not prime, or oeis.org/Mathematica?
  - From: hermann@stamm-wilbrandt.de
- Re: PARI/GP wrong on 7!!+7+1 being not prime, or oeis.org/Mathematica?
  - From: Bill Allombert <Bill.Allombert@math.u-bordeaux.fr>
- Re: PARI/GP wrong on 7!!+7+1 being not prime, or oeis.org/Mathematica?
  - From: James Cloos <cloos@jhcloos.com>
- Re: PARI/GP wrong on 7!!+7+1 being not prime, or oeis.org/Mathematica?
  - From: Vincent Delecroix <vincent.delecroix@u-bordeaux.fr>

Prev by Date: Re: PARI/GP wrong on 7!!+7+1 being not prime, or oeis.org/Mathematica?
Next by Date: Commands for testing presence of packages seadata-small, seadata-big, nftables?
Previous by thread: Re: PARI/GP wrong on 7!!+7+1 being not prime, or oeis.org/Mathematica?
Next by thread: Re: PARI/GP wrong on 7!!+7+1 being not prime, or oeis.org/Mathematica?
Index(es):
- Date
- Thread