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 L4256, one of those codes.
Code name (*): L4256 Persons (*): 1 (counting humans only) Projects (*): 1 (counting projects only) Display (HTML): Gniesmer, PSieve, Srsieve, PrimeGrid, LLR Number of primes: total 7 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess' Score for Primes (*): total 47.0184, on current list 46.6826 (normalized score 9) Entrance Rank (*): mean 657.00 (minimum 603, maximum 711)
Below is additional information about this entry.
Display (text): Gniesmer, PSieve, Srsieve, PrimeGrid, LLR Display (short): Gniesmer Database id: 8061 (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 0.011% of the (active) score for this program. Entry last modified: 2021-10-26 04:37:18