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 p258, one of those codes.
Code name (*): p258 Persons (*): 1 (counting humans only) Projects (*): 1 (counting projects only) Display (HTML): Batalov, Srsieve, CRUS, OpenPFGW Number of primes: total 15 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess' Score for Primes (*): total 46.2383, on current list 45.1901 (normalized score 2) Entrance Rank (*): mean 87.00 (minimum 87, maximum 87)
Below is additional information about this entry.
Display (text): Batalov, Srsieve, CRUS, OpenPFGW Display (short): Batalov Database id: 4373 (do not use this database id, it is subject to change) Proof program: PrimeForm The primes from this code accounts for 0.216% of the (active) primes and 0.206% of the (active) score for this program. Entry last modified: 2021-11-28 13:37:20