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 p424, one of those codes.
Code name (*): p424 Persons (*): 1 (counting humans only) Projects (*): 0 (counting projects only) Display (HTML): Liiv, Cksieve, OpenPFGW Number of primes: total 2 Unverified Primes: 0 (prime table entries marked 'Composite','Untested', or 'InProcess' Score for Primes (*): total 45.2852, on current list 45.2852 (normalized score 2) Entrance Rank (*): mean 4166.00 (minimum 4046, maximum 4286)
Below is additional information about this entry.
Display (text): Liiv, Cksieve, OpenPFGW Display (short): Liiv Database id: 9477 (do not use this database id, it is subject to change) Proof program: PrimeForm The primes from this code accounts for 0.431% of the (active) primes and 0.226% of the (active) score for this program. Entry last modified: 2021-12-02 13:37:18