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 L268, one of those codes.
Code name (*): L268 Persons (*): 1 (counting humans only) Projects (*): 1 (counting projects only) Display (HTML): Metcalfe, Srsieve, Rieselprime, LLR Number of primes: total 422 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess') Score for Primes (*): total 47.4814, on current list 45.3899 (normalized score 3) Entrance Rank (*): mean 60.00 (minimum 60, maximum 60)
Below is additional information about this entry.
Display (text): Metcalfe, Srsieve, Rieselprime, LLR Display (short): Metcalfe Database id: 1638 (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 0.004% of the (active) score for this program. Entry last modified: 2020-08-14 23:50:15