Deficient Factorials
A summary of searches for primes of the form n!/k+-1 (k above 1), n!/k!+-1 (k above 3) and n!/n#+-1.
Entropy and Prime Numbers
Entropy of a nonnegative adjacency matrix related to prime numbers.
Introduction to Twin Primes and Brun's Constant
An article by Pascal Sebah with the results of computation of the twin primes up to 5.10^15.
MathWorld: Prime Numbers
Index to hundreds of prime-related articles in Eric Weisstein's MathWorld.
On-Line Encyclopedia of Integer Sequences (OEIS): Primes
Index to information about many integer sequences involving primes. Site includes numerous other prime-related sequences.
Prime Numbers and Factoring
This page is a collection of links related to prime numbers and factoring of very large numbers.
Some Prime Numbers
Sieves and factoring for small numbers. Download primes below 8 billion.
Status of Search for Multifactorial Primes
An organized search for primes of the form (n)(n-k)(n-2k)...+/-1. Includes table of numbers searched and primes found.
The First 5,800,000 Prime Numbers
Site includes known primes k*2^n-1 for k=301 to 999.
The Prime Pages
Prime number research, records and resources. Includes largest known primes, finding and proving primes, glossary, curios, links.
The Prime Puzzles & Problems Connection
Carlos Rivera's collection of problems and puzzles related to prime numbers.
World of Numbers: World of Palindromic Primes
Records, statistics, curios and puzzles about primes reading the same backwards. Compiled by Patrick De Geest.
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