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 c7, one of those codes.
Code name (*): c7 Persons (*): 2 (counting humans only) Projects (*): 0 (counting projects only) Display (HTML): Water, Caldwell, Primo Number of primes: total 1 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess' Score for Primes (*): total 27.8519
Below is additional information about this entry.
Display (text): Water, Caldwell, Primo Display (short): Water & Caldwell Database id: 85 (do not use this database id, it is subject to change) Proof program: Primo Entry last modified: 2023-01-27 11:50:11