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 c63, one of those codes.
Code name (*): c63 Persons (*): 1 (counting humans only) Projects (*): 1 (counting projects only) Display (HTML): Ritschel, TOPS, Primo Number of primes: total 8 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess' Score for Primes (*): total 34.7253, on current list 34.7251 Entrance Rank (*): mean 73567.00 (minimum 60998, maximum 97597)
Below is additional information about this entry.
Display (text): Ritschel, TOPS, Primo Display (short): Ritschel Database id: 7057 (do not use this database id, it is subject to change) Proof program: Primo The primes from this code accounts for 1.799% of the (active) primes and 0.001% of the (active) score for this program. Entry last modified: 2021-09-24 01:37:19