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 BR, one of those codes.
Code name (*): BR Persons (*): 2 (counting humans only) Projects (*): 0 (counting projects only) Display (HTML): Riesel, Bjorn Number of primes: total 1 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess') Score for Primes (*): total 29.4051
Below is additional information about this entry.
Display (text): Riesel, Bjorn Display (short): Riesel & Bjorn Database id: 477 (do not use this database id, it is subject to change) Proof program: unknown Entry last modified: 2020-07-04 20:20:13