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 CH13, one of those codes.
Code name (*): CH13 Persons (*): 2 (counting humans only) Projects (*): 0 (counting projects only) Display (HTML): Propper, Batalov, Primo, OpenPFGW, CHG Number of primes: total 2 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess') Score for Primes (*): total 38.9205, on current list 38.9205 Entrance Rank (*): mean 49546.50 (minimum 48950, maximum 50143)
Below is additional information about this entry.
Display (text): Propper, Batalov, Primo, OpenPFGW, CHG Display (short): Propper & Batalov Database id: 9143 (do not use this database id, it is subject to change) Proof program: CHG The primes from this code accounts for 8.333% of the (active) primes and 0.043% of the (active) score for this program. Entry last modified: 2020-10-30 02:50:34