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 L1204, one of those codes.
Code name (*): L1204 (See the descriptive data below.) Persons (*): 1 (counting humans only) Projects (*): 1 (counting projects only) Display (HTML): Brown1, PSieve, Srsieve, PrimeGrid, LLR Number of primes: total 863 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess') Score for Primes (*): total 50.7393, on current list 50.3761 (normalized score 486) Entrance Rank (*): mean 1459.40 (minimum 47, maximum 3758)
Below is additional information about this entry.
Display (text): Brown1, PSieve, Srsieve, PrimeGrid, LLR Display (short): Brown1 Database id: 4552 (do not use this database id, it is subject to change) Proof program: LLR The primes from this code accounts for 1.713% of the (active) primes and 0.671% of the (active) score for this program. Entry last modified: 2020-07-02 09:50:31