See also:

• Computers: Computer Science: Distributed Computing: Projects: Cryptography  (15)
• Science: Math: Number Theory: Prime Numbers: Mersenne  (9)
• Science: Math: Number Theory: Software  (62)

• The Prime Pages' Links   - A set of links to programs to prescreen, test, and prove primality for large primes.

• ECPP - An Elliptic Curve Primality Proving program by François Morain. Author has later implemented fastECPP which is not publicly available.
• Glucas - Yet Another FFT - Free software program to test primality of Mersenne numbers (numbers with the form 2^n - 1).
• Jean Penné's LLR - Proves k*2^n-1 with the Lucas-Lehmer-Riesel algorithm and k*2^n+1 with Proth's theorem. Free Windows and Linux download.
• Paul Jobling's NewPGen - Sieving program for various listed forms involving a power or primorial. Page has introduction and free downloads for Windows or Linux.
• Prime Number Spiral - Windows software for exploring the Prime Number (Ulam's) Spiral. Online purchase.
• Primo - Elliptic Curve Primality Proving program which has set monoprocessor ECPP records. Windows freeware by Marcel Martin.
• Yahoo Groups: Primeform - Discussion group for PrimeFormGW and prime numbers. Program can trial factor and probable prime test any number, and prove many forms. Free Windows and Linux downloads after joining group.
• Yves Gallot's Proth.exe - Program to prove large primes on the form k*2^n+/-1. Page has introduction and free Windows download.