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 E5, one of those codes.
Code name (*): E5 Persons (*): 1 (counting humans only) Projects (*): 0 (counting projects only) Display (HTML): Underwood, CM Number of primes: total 1 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess' Score for Primes (*): total 36.0601, on current list 36.0601 Entrance Rank (*): mean 63952.00 (minimum 63952, maximum 63952)
Below is additional information about this entry.
Display (text): Underwood, CM Display (short): Underwood Database id: 9642 (do not use this database id, it is subject to change) Proof program: cm The primes from this code accounts for 2.000% of the (active) primes and 4.745% of the (active) score for this program. Entry last modified: 2022-08-10 17:50:12