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 L4976, one of those codes.
Code name (*): L4976 Persons (*): 2 (counting humans only) Projects (*): 0 (counting projects only) Display (HTML): Propper, Batalov, Gcwsieve, LLR Number of primes: total 6 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess' Score for Primes (*): total 52.2214, on current list 52.2214 (normalized score 2415) Entrance Rank (*): mean 66.17 (minimum 20, maximum 159)
Below is additional information about this entry.
Display (text): Propper, Batalov, Gcwsieve, LLR Display (short): Propper & Batalov Database id: 8953 (do not use this database id, it is subject to change) Proof program: LLR The primes from this code accounts for 0.122% of the (active) primes and 2.927% of the (active) score for this program. Entry last modified: 2021-09-26 16:37:21