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 L3973, one of those codes.
Code name (*): L3973 Persons (*): 1 (counting humans only) Projects (*): 1 (counting projects only) Display (HTML): Jedrzejczyk, PSieve, Srsieve, PrimeGrid, LLR Number of primes: total 6 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess') Score for Primes (*): total 45.8056, on current list 44.9868 (normalized score 2) Entrance Rank (*): mean 3499.50 (minimum 3435, maximum 3564)
Below is additional information about this entry.
Display (text): Jedrzejczyk, PSieve, Srsieve, PrimeGrid, LLR Display (short): Jedrzejczyk Database id: 7718 (do not use this database id, it is subject to change) Proof program: LLR The primes from this code accounts for 0.041% of the (active) primes and 0.003% of the (active) score for this program. Entry last modified: 2020-08-10 23:20:15