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 c84, one of those codes.
Code name (*): c84 Persons (*): 1 (counting humans only) Projects (*): 0 (counting projects only) Display (HTML): Underwood, Primo Number of primes: total 7 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess' Score for Primes (*): total 37.4714, on current list 37.3740 Entrance Rank (*): mean 63682.40 (minimum 55240, maximum 74354)
Below is additional information about this entry.
Display (text): Underwood, Primo Display (short): Underwood Database id: 8341 (do not use this database id, it is subject to change) Proof program: Primo The primes from this code accounts for 1.285% of the (active) primes and 0.009% of the (active) score for this program. Entry last modified: 2021-09-25 21:37:26