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 CH12, one of those codes.
Code name (*): CH12 (See the descriptive data below.) Persons (*): 2 (counting humans only) Projects (*): 0 (counting projects only) Display (HTML): Propper, Batalov, OpenPFGW, Primo, CHG Number of primes: total 3 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess' Score for Primes (*): total 39.2557, on current list 39.2557 Entrance Rank (*): mean 49807.33 (minimum 48950, maximum 50329)
Below is additional information about this entry.
Display (text): Propper, Batalov, OpenPFGW, Primo, CHG Display (short): Propper & Batalov Database id: 9106 (do not use this database id, it is subject to change) Proof program: CHG The primes from this code accounts for 12.000% of the (active) primes and 0.031% of the (active) score for this program. Entry last modified: 2021-08-03 15:37:17