This is a collection of 10,000 files, occupying about 486GB of disk space in their unzipped native txt format. Since adjacent primes have about 90% identical leading digits, the compressed (zip) versions total 61GB. Each zip file contains 100 txt files.

Do not use Windows Explorer to copy or move large numbers of files at a time. Use DOS copy or xcopy for large copies. I find Beyond Compare (Scooter Software) handy for keeping track of large numbers of files.

The following zip file names denotes the start of a range of primes in billions (1,000,000,000), and covers a range of 10,000,000,000. Each zip file contains 100 txt files, each covering the primes in a range of 100,000,000.

PrimeC File Format and
Miscellaneous C++ Programs

While working with primes, I developed the primec format, a file or array representation for primes that is roughly the same size of the compressed (zipped) txt representation, and supports fast access, both sequential and direct. The exact location of the primality specification of any number in the file (or memory array) is computed with a few instructions and no search.

If you wish to examine and experiment with the C++ programs used to reformat these prime lists and test the Goldbach Conjecture, download the "programs.zip" package. It contains Generating and Analyzing Prime Numbers, a description of the content and use of these files, including the primec file format.