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 L621, one of those codes.
Code name (*): L621 Persons (*): 1 (counting humans only) Projects (*): 1 (counting projects only) Display (HTML): Sutton1, Srsieve, Rieselprime, LLR Number of primes: total 117 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess') Score for Primes (*): total 46.4032, on current list 45.3331 (normalized score 3) Entrance Rank (*): mean 69.50 (minimum 67, maximum 72)
Below is additional information about this entry.
Display (text): Sutton1, Srsieve, Rieselprime, LLR Display (short): Sutton1 Database id: 3618 (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 0.003% of the (active) score for this program. Entry last modified: 2021-03-05 17:20:17