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 p420, one of those codes.
Code name (*): p420 Persons (*): 1 (counting humans only) Projects (*): 0 (counting projects only) Display (HTML): Alex, OpenPFGW Number of primes: total 1 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess' Score for Primes (*): total 44.6155, on current list 44.6155 (normalized score 1) Entrance Rank (*): mean 3858.00 (minimum 3858, maximum 3858)
Below is additional information about this entry.
Display (text): Alex, OpenPFGW Display (short): Alex Database id: 9438 (do not use this database id, it is subject to change) Proof program: PrimeForm The primes from this code accounts for 0.216% of the (active) primes and 0.137% of the (active) score for this program. Entry last modified: 2021-09-26 20:37:19