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 L3553, one of those codes.
Code name (*): L3553 Persons (*): 1 (counting humans only) Projects (*): 1 (counting projects only) Display (HTML): Cilliers, Srsieve, PrimeGrid, LLR Number of primes: total 2 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess') Score for Primes (*): total 47.1053, on current list 47.1053 (normalized score 18) Entrance Rank (*): mean 96.50 (minimum 65, maximum 128)
Below is additional information about this entry.
Display (text): Cilliers, Srsieve, PrimeGrid, LLR Display (short): Cilliers Database id: 7224 (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 0.025% of the (active) score for this program. Entry last modified: 2020-08-10 06:50:17