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 L2131, one of those codes.
Code name (*): L2131 Persons (*): 1 (counting humans only) Projects (*): 1 (counting projects only) Display (HTML): Johnson4, PSieve, Srsieve, PrimeGrid, LLR Number of primes: total 31 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess' Score for Primes (*): total 46.6481, on current list 45.7723 (normalized score 4) Entrance Rank (*): mean 332.33 (minimum 260, maximum 427)
Below is additional information about this entry.
Display (text): Johnson4, PSieve, Srsieve, PrimeGrid, LLR Display (short): Johnson4 Database id: 5596 (do not use this database id, it is subject to change) Proof program: LLR The primes from this code accounts for 0.061% of the (active) primes and 0.005% of the (active) score for this program. Entry last modified: 2021-06-21 06:37:19