[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: ANN: the first million prime numbers in XML format
Er, pardon me for asking, but what's so special about prime numbers? Thanks, Peter ________________________________________ From: Dimitre Novatchev [dnovatchev@gmail.com] Sent: July 6, 2012 12:39 AM To: Costello, Roger L. Cc: xml-dev@lists.xml.org Subject: Re: ANN: the first million prime numbers in XML format A small correction: I was speaking about all the primes less than 50 million, nor about the first 50 million primes. Cheers, Dimitre. On Thu, Jul 5, 2012 at 4:49 PM, Dimitre Novatchev <dnovatchev@gmail.com> wrote: > I have had for years even bigger collections of primes and have used > them to solve Project Eulet problems entirely with XSLT. > > The first 50 million primes occupy 27MB. > > The format is more convenient for XSLT: > > <xsl:variable name="vcountPrimesLT50M" as="xs:integer" > select="count($vPrimesLT50M)"/> > > <xsl:variable name="vPrimesLT50M" as="xs:integer+" > select= > " > 2,3,5,7,11,13,17,19 > > ,23,29,31,37,41,43,47,53 > > ,59,61,67,71,73,79,83,89 > > ,97,101,103,107,109,113,127,131 > > ,137,139,149,151,157,163,167,173 > > ,179,181,191,193,197,199,211,223 > > . . . . . . > > > If someone is interested, please ping me and I will make these files available. > > > Cheers, > Dimitre. > > On Thu, Jul 5, 2012 at 1:07 PM, Costello, Roger L. <costello@mitre.org> wrote: >> >> Hi Folks, >> >> I often wondered why mathematics books seem so focused on prime numbers. >> >> Now I know. >> >> Recall what a prime number is: an integer larger than 1 is said to be >> prime if it cannot be written as a product of two smaller positive integers. >> >> Here are some prime numbers: 2, 3, 5, 7, 11, 13. >> >> A number that is not prime is said to be composite. Here are some >> composite numbers: 4, 6, 8, 9, 10, 12. >> >> So every positive integer is either a prime or a composite. >> >> It can be proven that every composite number can be decomposed into a >> product of primes. >> >> Further, there is only one way to factorize a composite number into >> primes. This is called the unique factorization theorem. >> >> So, the building blocks of every integer beyond 1 are primes. In this >> sense the primes from mathematics correspond to the atoms from chemistry and >> deserve the same kind of intense scrutiny. >> >> Neat! >> >> So I created two XML documents, collectively containing the first million >> prime numbers. >> >> The first XML document contains the first 500,000 primes and the second >> XML document contains the 500,001 to 1,000,000 prime numbers: >> >> http://www.xfront.com/first-500000-primes.xml >> http://www.xfront.com/second-500000-primes.xml >> >> Be patient. They are large files (10 MB and 11 MB, respectively) >> >> /Roger >> >> _______________________________________________________________________ >> >> XML-DEV is a publicly archived, unmoderated list hosted by OASIS >> to support XML implementation and development. To minimize >> spam in the archives, you must subscribe before posting. >> >> [Un]Subscribe/change address: http://www.oasis-open.org/mlmanage/ >> Or unsubscribe: xml-dev-unsubscribe@lists.xml.org >> subscribe: xml-dev-subscribe@lists.xml.org >> List archive: http://lists.xml.org/archives/xml-dev/ >> List Guidelines: http://www.oasis-open.org/maillists/guidelines.php >> > > > > -- > Cheers, > Dimitre Novatchev > --------------------------------------- > Truly great madness cannot be achieved without significant intelligence. > --------------------------------------- > To invent, you need a good imagination and a pile of junk > ------------------------------------- > Never fight an inanimate object > ------------------------------------- > To avoid situations in which you might make mistakes may be the > biggest mistake of all > ------------------------------------ > Quality means doing it right when no one is looking. > ------------------------------------- > You've achieved success in your field when you don't know whether what > you're doing is work or play > ------------------------------------- > Facts do not cease to exist because they are ignored. > ------------------------------------- > I finally figured out the only reason to be alive is to enjoy it. -- Cheers, Dimitre Novatchev --------------------------------------- Truly great madness cannot be achieved without significant intelligence. --------------------------------------- To invent, you need a good imagination and a pile of junk ------------------------------------- Never fight an inanimate object ------------------------------------- To avoid situations in which you might make mistakes may be the biggest mistake of all ------------------------------------ Quality means doing it right when no one is looking. ------------------------------------- You've achieved success in your field when you don't know whether what you're doing is work or play ------------------------------------- Facts do not cease to exist because they are ignored. ------------------------------------- I finally figured out the only reason to be alive is to enjoy it. _______________________________________________________________________ XML-DEV is a publicly archived, unmoderated list hosted by OASIS to support XML implementation and development. To minimize spam in the archives, you must subscribe before posting. [Un]Subscribe/change address: http://www.oasis-open.org/mlmanage/ Or unsubscribe: xml-dev-unsubscribe@lists.xml.org subscribe: xml-dev-subscribe@lists.xml.org List archive: http://lists.xml.org/archives/xml-dev/ List Guidelines: http://www.oasis-open.org/maillists/guidelines.php
[Date Prev] | [Thread Prev] | [Thread Next] | [Date Next] -- [Date Index] | [Thread Index] |
PURCHASE STYLUS STUDIO ONLINE TODAY!Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced! Download The World's Best XML IDE!Accelerate XML development with our award-winning XML IDE - Download a free trial today! Subscribe in XML format
|