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 L4963, one of those codes.
Code name (*): L4963 Persons (*): 1 (counting humans only) Projects (*): 1 (counting projects only) Display (HTML): Mortimore, GFNSvCUDA, GeneFer, AthGFNSieve, PrimeGrid, LLR Number of primes: total 20 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess' Score for Primes (*): total 48.9112, on current list 48.9112 (normalized score 88) Entrance Rank (*): mean 1889.25 (minimum 393, maximum 2914)
Below is additional information about this entry.
Display (text): Mortimore, GFNSvCUDA, GeneFer, AthGFNSieve, PrimeGrid, LLR Display (short): Mortimore Database id: 8933 (do not use this database id, it is subject to change) Proof program: LLR The primes from this code accounts for 0.406% of the (active) primes and 0.107% of the (active) score for this program. Entry last modified: 2021-09-25 21:37:26