Number Theory Factoring

• Division Rules
• Perfect Numbers
• Tables

• Discovery of a Lost Factoring Machine  - Discusses recovery of device from the Observatoire de Bordeaux.
• Factoring Papers  - Contains survey on factorization algorithims, and details on elliptic curve method, quadratic sieve, square roots in number fields, and linear algebra.
• Factorizations of Near-repdigit Numbers  - Contains factor tables and information on repunit, plateau and depression. With records, forms and implementations.
• FactorWorld  - Dedicated to algorithms and computational results on integer factorization, with research papers, records, codes and announcements.
• Known Amicable Pairs  - Shows table with number of amicable pairs according to the number of digits.
• RSA Laboratories - Factoring Challenge  - Awards the first person to factor given numbers, with verification from the lab on the correctness of the factorization.
• Sierpinski Problem - Definition and Status  - Provides results on theorem, conjecture and developments in the computational approach of the Sierpinski complexities.