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 p409, one of those codes.
Code name (*): p409 Persons (*): 1 (counting humans only) Projects (*): 0 (counting projects only) Display (HTML): Nielsen1, OpenPFGW Number of primes: total 2 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess' Score for Primes (*): total 39.0545, on current list 38.4558 Entrance Rank (*): mean 48407.00 (minimum 48407, maximum 48407)
Below is additional information about this entry.
Display (text): Nielsen1, OpenPFGW Display (short): Nielsen1 Database id: 9091 (do not use this database id, it is subject to change) Proof program: PrimeForm The primes from this code accounts for 0.239% of the (active) primes and 0.000% of the (active) score for this program. Entry last modified: 2023-10-01 01:37:14