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 L4142, one of those codes.
Code name (*): L4142 Persons (*): 1 (counting humans only) Projects (*): 1 (counting projects only) Display (HTML): Batalov, CycloSv, EMsieve, PIES, LLR Number of primes: total 41 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess') Score for Primes (*): total 48.4584, on current list 48.2705 (normalized score 56) Entrance Rank (*): mean 1096.84 (minimum 242, maximum 1760)
Below is additional information about this entry.
Display (text): Batalov, CycloSv, EMsieve, PIES, LLR Display (short): Batalov Database id: 7919 (do not use this database id, it is subject to change) Proof program: LLR The primes from this code accounts for 0.509% of the (active) primes and 0.073% of the (active) score for this program. Entry last modified: 2020-12-03 13:50:13