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Top / Science / Math / Number_Theory / Factoring /

Factoris Online calculator that factorizes large numbers, specified by formula. http://wims.unice.fr/~wims/wims.cgi?lang=en&amp;module=tool/algebra/factor.en&amp;cmd=new&amp; Unice.fr  ~   Site Info   Whois   Trace Route   RBL Check   The Factor Zone Aimed at grade school students and teachers, includes course guidelines, worksheets, and factor tables up to 600. http://factorzone.tripod.com/ Tripod.com  ~   Site Info   Whois   Trace Route   RBL Check   Sierpinski Problem Sierpinski proved there exist infinitely many odd integers k such that k*2^n+1 is composite for every n. Ray Ballinger coordinates a search to prove or disprove whether k=78557 is the smallest solution. http://www.prothsearch.net/sierp.html Prothsearch.net  ~   Site Info   Whois   Trace Route   RBL Check   I Love Binary, Primes, and Factors Divisibility, primes and binary numbers. http://home.earthlink.net/~usondermann/binary.html Earthlink.net  ~   Site Info   Whois   Trace Route   RBL Check   Factorization Using the Elliptic Curve Method Java applet that can be used to find 20- or 30-digit factors of numbers or numerical expressions up to 1000 digits long. It also computes the number and sum of divisors, the Euler's totient and moebius functions, and the decomposition of the number in a http://www.alpertron.com.ar/ECM.HTM Alpertron.com.ar  ~   Site Info   Whois   Trace Route   RBL Check   Fermat Search Leonid Durman's Fermat number factoring site and program. http://www.fermatsearch.org/ Fermatsearch.org  ~   Site Info   Whois   Trace Route   RBL Check   FactorWorld Dedicated to algorithms and computational results on integer factorization. Includes links to papers, downloadable software, and online resources. http://www.crypto-world.com/FactorWorld.html Crypto-world.com  ~   Site Info   Whois   Trace Route   RBL Check   Factorization of RSA-155 Announcement of factorization of a 512-bit RSA key using the General Number Field Sieve (GNFS). http://www.crypto-world.com/announcements/RSA155.txt Crypto-world.com  ~   Site Info   Whois   Trace Route   RBL Check   The XYYXF Project A collaborative project to produce the factorizations of x^y + y^x for 1<y<x<101. http://xyyxf.at.tut.by/ Tut.by  ~   Site Info   Whois   Trace Route   RBL Check   Factoring Papers Links to papers on the theory and practice of factoring. http://www.crypto-world.com/FactorPapers.html Crypto-world.com  ~   Site Info   Whois   Trace Route   RBL Check