

Science Math Number Theory Factoring Science Math Number Theory Factoring sites Factoring.NumberTheory.Math.sciencenter.work 

Science Math Number Theory Factoring Science Math Number Theory Factoring sites Factoring.NumberTheory.Math.sciencesites.work 

Discovery of a Lost Factoring Machine Built by a French amateur , E. O. Carissan , around 1919. Shallit , Williams and Morain include photographs and references to their paper. www.cs.uwaterloo.ca/~shallit/Papers/carissan.html 

Factoring Fermat Numbers Cash prizes for new factors of Fermat numbers Fn , for n = 12 through 22. www.perfsci.com/freegoods.htm#fermat 

Factoring Papers Links to papers on the theory and practice of factoring. www.cryptoworld.com/FactorPapers.html 

Factoris Online calculator that factorizes large numbers , specified by formula. wims.unice.fr/~wims/wims.cgi?lang=en&module=tool/algebra/factor.en&cmd=new& 

Factorization of RSA155 Announcement of factorization of a 512bit RSA key using the General Number Field Sieve (GNFS). www.cryptoworld.com/announcements/RSA155.txt 

Factorization Using the Elliptic Curve Method Java applet that can be used to find 20 or 30digit 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 www.alpertron.com.ar/ECM.HTM 

Factorizations of Nearrepdigit Numbers Factorizations of numbers composed of all the same digit except first and/or last. homepage2.nifty.com/m_kamada/math/factorizations.htm 

FactorWorld Dedicated to algorithms and computational results on integer factorization. Includes links to papers , downloadable software , and online resources. www.cryptoworld.com/FactorWorld.html 

Fermat Search Leonid Durman's Fermat number factoring site and program. www.fermatsearch.org/ 

Integer Factorization Paul Leyland's list of his own and other factorisations. www.leyland.vispa.com/numth/factorization/main.htm 

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. www.prothsearch.net/sierp.html 

The Factor Zone Aimed at grade school students and teachers , includes course guidelines , worksheets , and factor tables up to 600. factorzone.tripod.com/ 

The XYYXF Project A collaborative project to produce the factorizations of x^y + y^x for 1< y< x< 101. xyyxf.at.tut.by/ 
