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 CH4, one of those codes.
Code name (*): CH4 (See the descriptive data below.) Persons (*): 3 (counting humans only) Projects (*): 0 (counting projects only) Display (HTML): Irvine, Water, Broadhurst, Primo, OpenPFGW, CHG Number of primes: total 3 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess') Score for Primes (*): total 37.3809, on current list 37.2491 Entrance Rank (*): mean 22027.00 (minimum 14655, maximum 29399)
Below is additional information about this entry.
Display (text): Irvine, Water, Broadhurst, Primo, OpenPFGW, CHG Display (short): Irvine, Water & Broadhurst Database id: 1085 (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 0.008% of the (active) score for this program. Entry last modified: 2021-01-17 22:20:16