| 1. | Factoris | | | Online calculator that factorizes large numbers, specified by formula.
wims.unice.fr |
| 2. | The Factor Zone | | | Aimed at grade school students and teachers, includes course guidelines, worksheets, and factor tables up to 600.
factorzone.tripod.com |
| 3. | Factoring Theory | | | A thorough summary of many major factoring algorithms. Includes some source code on many pages, and gentle introductions to the more complex methods.
www.frenchfries.net |
| 4. | Robinson Primes | | | An analysis of problems relating to the numbers k.2^n+-1, primes, and factor patterns, including the Sierpinski problem.
www.glasgowg43.freeserve.co.uk |
| 5. | 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 |
| 6. | N!+-1 Factoring Status | | | Factoring efforts that have been made so far on numbers of the form n!+-1 using ECM factoring.
www.uow.edu.au |
| 7. | Sam Wagstaff | | | Article about SNFS factorisation of 3^349-1.
www.purdue.edu |
| 9. | 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 sum of up to four squares.
www.alpertron.com.ar |
| 10. | Fermat Search | | | Leonid Durman's Fermat number factoring site and program.
www.fermatsearch.org |
| 11. | FactorWorld | | | Dedicated to algorithms and computational results on integer factorization. Includes links to papers, downloadable software, and online resources.
www.crypto-world.com |
| 12. | Factorization of RSA-155 | | | Announcement of factorization of a 512-bit RSA key using the General Number Field Sieve (GNFS).
www.crypto-world.com |
| 15. | Factoring Papers | | | Links to papers on the theory and practice of factoring.
www.crypto-world.com |
| 17. | Known Amicable Pairs | | | A listing of all the known pairs of numbers, each of which is the sum of the aliquot divisors of the other. Complete for smaller numbers, and extending beyond 200 digits.
amicable.homepage.dk |
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