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 L251, one of those codes.
Code name (*): L251 Persons (*): 1 (counting humans only) Projects (*): 1 (counting projects only) Display (HTML): Burt, NewPGen, Rieselprime, LLR Number of primes: total 280 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess') Score for Primes (*): total 47.2387, on current list 45.7711 (normalized score 4) Entrance Rank (*): mean 52.00 (minimum 45, maximum 59)
Below is additional information about this entry.
Display (text): Burt, NewPGen, Rieselprime, LLR Display (short): Burt Database id: 1341 (do not use this database id, it is subject to change) Proof program: LLR The primes from this code accounts for 0.041% of the (active) primes and 0.006% of the (active) score for this program. Entry last modified: 2021-01-15 21:50:15