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 L47, one of those codes.
Code name (*): L47 (See the descriptive data below.) Persons (*): 1 (counting humans only) Projects (*): 1 (counting projects only) Display (HTML): Bishop_D, ProthSieve, RieselSieve, LLR Number of primes: total 4 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess') Score for Primes (*): total 45.1063, on current list 44.7173 (normalized score 2) Entrance Rank (*): mean 20.00 (minimum 20, maximum 20)
Below is additional information about this entry.
Display (text): Bishop_D, ProthSieve, RieselSieve, LLR Display (short): Bishop_D Database id: 726 (do not use this database id, it is subject to change) Proof program: LLR The primes from this code accounts for 0.020% of the (active) primes and 0.002% of the (active) score for this program. Entry last modified: 2020-09-30 22:50:17