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 CD, one of those codes.
Code name (*): CD (See the descriptive data below.) Persons (*): 2 (counting humans only) Projects (*): 0 (counting projects only) Display (HTML): Caldwell, Dubner, Cruncher Number of primes: total 31 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess' Score for Primes (*): total 32.2999, on current list 32.0237 Entrance Rank (*): mean 465.40 (minimum 79, maximum 1304)
Below is additional information about this entry.
Display (text): Caldwell, Dubner, Cruncher Display (short): Caldwell & Dubner Database id: 136 (do not use this database id, it is subject to change) Proof program: Cruncher The primes from this code accounts for 17.857% of the (active) primes and 9.993% of the (active) score for this program. Entry last modified: 2021-10-26 23:37:19