Samuel Yates began, and this site continues, a database of the largest known primes. Primes in that database are assigned a proof-code to show who should be credited with the discovery as well as what programs and projects they used. (Discoverers have one prover-entry, but may have many proof-codes because they use a variety of programs...)
This page provides data on x25, one of those codes.
Code name (*): x25 (See the descriptive data below.) Persons (*): 2 (counting humans only) Projects (*): 0 (counting projects only) Display (HTML): Water, Broadhurst, Primo, OpenPFGW Number of primes: total 309 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess') Score for Primes (*): total 40.0848, on current list 39.6153 Entrance Rank (*): mean 47673.21 (minimum 10499, maximum 63819)
Below is additional information about this entry.
Display (text): Water, Broadhurst, Primo, OpenPFGW Display (short): Water & Broadhurst Database id: 113 (do not use this database id, it is subject to change) Proof program: unknown Entry last modified: 2021-05-08 23:37:18