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 E6, one of those codes.
Code name (*): E6 Persons (*): 3 (counting humans only) Projects (*): 0 (counting projects only) Display (HTML): Lasher, Broadhurst, Underwood, CM Number of primes: total 20 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess' Score for Primes (*): total 36.2989, on current list 35.6092 Entrance Rank (*): mean 75500.70 (minimum 75480, maximum 75522)
Below is additional information about this entry.
Display (text): Lasher, Broadhurst, Underwood, CM Display (short): Lasher, Broadhurst & Underwood Database id: 9646 (do not use this database id, it is subject to change) Proof program: cm The primes from this code accounts for 17.857% of the (active) primes and 2.060% of the (active) score for this program. Entry last modified: 2023-02-04 08:50:21