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 L3972, one of those codes.
Code name (*): L3972 Persons (*): 1 (counting humans only) Projects (*): 1 (counting projects only) Display (HTML): Clark, PSieve, Srsieve, PrimeGrid, LLR Number of primes: total 40 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess') Score for Primes (*): total 47.7086, on current list 45.6996 (normalized score 4) Entrance Rank (*): mean 3571.50 (minimum 3160, maximum 3899)
Below is additional information about this entry.
Display (text): Clark, PSieve, Srsieve, PrimeGrid, LLR Display (short): Clark Database id: 7717 (do not use this database id, it is subject to change) Proof program: LLR The primes from this code accounts for 0.081% of the (active) primes and 0.006% of the (active) score for this program. Entry last modified: 2020-11-29 23:20:17