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: 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: References: From: Ian Kelly Date: Wed, 13 Aug 2014 12:13:46 -0600 Subject: Re: Log base 2 of large integers To: Python 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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: 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 On Wed, Aug 13, 2014 at 10:18 AM, Chris Angelico wrote: > On Thu, Aug 14, 2014 at 2:12 AM, Peter Pearson 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.