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 L4956, one of those codes.
Code name (*): L4956 Persons (*): 1 (counting humans only) Projects (*): 1 (counting projects only) Display (HTML): Merrylees, GFNSvCUDA, GeneFer, AthGFNSieve, PrimeGrid, LLR Number of primes: total 12 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess' Score for Primes (*): total 48.9788, on current list 48.9788 (normalized score 93) Entrance Rank (*): mean 1898.25 (minimum 104, maximum 2897)
Below is additional information about this entry.
Display (text): Merrylees, GFNSvCUDA, GeneFer, AthGFNSieve, PrimeGrid, LLR Display (short): Merrylees Database id: 8924 (do not use this database id, it is subject to change) Proof program: LLR The primes from this code accounts for 0.244% of the (active) primes and 0.112% of the (active) score for this program. Entry last modified: 2021-10-27 13:37:19