Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > comp.lang.python > #76222

Re: Log base 2 of large integers

Path csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!newsfeed.xs4all.nl!newsfeed4a.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail
Return-Path <ian.g.kelly@gmail.com>
X-Original-To python-list@python.org
Delivered-To python-list@mail.python.org
X-Spam-Status OK 0.084
X-Spam-Evidence '*H*': 0.83; '*S*': 0.00; '64-bit': 0.07; 'memory.': 0.07; 'python': 0.11; 'wrote:': 0.18; 'wed,': 0.18; 'thu,': 0.19; 'aug': 0.22; 'somewhere': 0.26; 'header:In-Reply-To:1': 0.27; 'chris': 0.29; 'am,': 0.29; 'message-id:@mail.gmail.com': 0.30; '13,': 0.31; 'large.': 0.31; 'probably': 0.32; "we're": 0.32; 'received:google.com': 0.35; '14,': 0.36; 'representing': 0.36; 'to:addr:python-list': 0.38; 'rather': 0.38; 'to:addr:python.org': 0.39; 'called': 0.40; 'number,': 0.60; 'talking': 0.65; 'between': 0.67; 'hang': 0.67; 'subject:base': 0.84; "they'd": 0.84
DKIM-Signature v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :content-type; bh=qR4ZFaV/m91boSiIP6qqtN7kT7dza937cxHnaSLFV94=; b=BvcHqzvrG9iyZe99tMwHe1gqz2rQjmxtAS7UHfqyqC5PZyz7oXLKbxtxwNMitaWNp1 6+/Chwv7A23JguO6XL0BPGggj6GTcjU+rnCh4vMSTvCMLWm9Xm7Ns2TVWT0lGq0XVvjc mGOtVqbnu8qohAg9sUs7bq9R3uJV8wvaHQVn5edzhG0mYf/XtP1nHoo3fc5paPy5nOqH sb3n+2SU4mLMRBcsqJjK1hftq5G9jHM4iXY5Ey9uyco+5tSUtZxU1G9t1rH3M2NgvGu8 38P/Uc9jnWxAkryTaZ8+F1L43LVDQlv4JG6daR+864CgArtDGrAGglaJfahSVioPsSab XVxA==
X-Received by 10.68.68.131 with SMTP id w3mr5565726pbt.90.1407953666575; Wed, 13 Aug 2014 11:14:26 -0700 (PDT)
MIME-Version 1.0
In-Reply-To <CAPTjJmo2GW+G01kCiWt0kW5mjyoke_nzFsaJ2UuXHzAf0_D97w@mail.gmail.com>
References <lsfnr6$pbc$1@news.albasani.net> <mailman.12922.1407938306.18130.python-list@python.org> <c51h3fFonoiU1@mid.individual.net> <CAPTjJmo2GW+G01kCiWt0kW5mjyoke_nzFsaJ2UuXHzAf0_D97w@mail.gmail.com>
From Ian Kelly <ian.g.kelly@gmail.com>
Date Wed, 13 Aug 2014 12:13:46 -0600
Subject Re: Log base 2 of large integers
To Python <python-list@python.org>
Content-Type text/plain; charset=UTF-8
X-BeenThere python-list@python.org
X-Mailman-Version 2.1.15
Precedence list
List-Id General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe <https://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive <http://mail.python.org/pipermail/python-list/>
List-Post <mailto:python-list@python.org>
List-Help <mailto:python-list-request@python.org?subject=help>
List-Subscribe <https://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups comp.lang.python
Message-ID <mailman.12933.1407953670.18130.python-list@python.org> (permalink)
Lines 12
NNTP-Posting-Host 2001:888:2000:d::a6
X-Trace 1407953670 news.xs4all.nl 2927 [2001:888:2000:d::a6]:59904
X-Complaints-To abuse@xs4all.nl
Xref csiph.com comp.lang.python:76222

Show key headers only | View raw


On Wed, Aug 13, 2014 at 10:18 AM, Chris Angelico <rosuav@gmail.com> wrote:
> On Thu, Aug 14, 2014 at 2:12 AM, Peter Pearson <ppearson@nowhere.invalid> wrote:
>> MK Shen used to hang out on the sci.crypt newsgroup, so we're
>> probably talking "cryptographically large" rather than "engineeringly
>> large".
>
> So "fairly large" means somewhere between googolplex an Graham's
> Number, and after that they'd be called "very large"?

I estimate that representing a googolplex as a 64-bit Python 3 int
would require around 4.429 * 10**75 yottabytes of memory. So probably
not that large.

Back to comp.lang.python | Previous | NextPrevious in thread | Next in thread | Find similar | Unroll thread


Thread

Log base 2 of large integers Mok-Kong Shen <mok-kong.shen@t-online.de> - 2014-08-13 15:05 +0200
  Re: Log base 2 of large integers Skip Montanaro <skip@pobox.com> - 2014-08-13 08:16 -0500
    Re: Log base 2 of large integers Mok-Kong Shen <mok-kong.shen@t-online.de> - 2014-08-13 15:50 +0200
  Re: Log base 2 of large integers Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-08-13 23:32 +1000
    Re: Log base 2 of large integers Mok-Kong Shen <mok-kong.shen@t-online.de> - 2014-08-13 15:46 +0200
      Re: Log base 2 of large integers Marko Rauhamaa <marko@pacujo.net> - 2014-08-13 17:00 +0300
      Re: Log base 2 of large integers Andrew Jaffe <a.h.jaffe@gmail.com> - 2014-08-13 15:06 +0100
    Re: Log base 2 of large integers Peter Otten <__peter__@web.de> - 2014-08-13 16:17 +0200
  Re: Log base 2 of large integers Peter Otten <__peter__@web.de> - 2014-08-13 15:58 +0200
    Re: Log base 2 of large integers Peter Pearson <ppearson@nowhere.invalid> - 2014-08-13 16:12 +0000
      Re: Log base 2 of large integers Marko Rauhamaa <marko@pacujo.net> - 2014-08-13 19:15 +0300
      Re: Log base 2 of large integers Chris Angelico <rosuav@gmail.com> - 2014-08-14 02:18 +1000
      Re: Log base 2 of large integers Ian Kelly <ian.g.kelly@gmail.com> - 2014-08-13 12:13 -0600
  Re:Log base 2 of large integers Dave Angel <davea@davea.name> - 2014-08-13 10:10 -0400

csiph-web