Top person sorted by number of primes

At this site we keep several lists of primes, most notably the list of the 5,000 largest known primes. Who found the most of these record primes? We keep separate counts for persons, projects and programs. To see these lists click on 'number' to the right.

Clearly one 100,000,000 digit prime is much harder to discover than quite a few 100,000 digit primes. Based on the usual estimates we score the top persons, provers and projects by adding ‎(log n)³ log log n‎ for each of their primes n. Click on 'score' to see these lists.

Finally, to make sense of the score values, we normalize them by dividing by the current score of the 5000th prime. See these by clicking on 'normalized score' in the table on the right.

rank person primes score 1 Serge Batalov 373.333 54.6175 2 Ryan Propper 342 56.0487 3 Stefan Larsson 203 52.3269 4 Dr. James Scott Brown 182 52.8565 5 Randall Scalise 142 51.3809 6 Tom Greer 123 53.3615 7 Ken Davis 102.667 39.6158 8 Florian Piesker 99 50.5630 9 Wolfgang Schwieger 95 52.0190 10 Peter Kaiser 85.3333 51.0002 11 David Broadhurst 67.0332 46.9925 12 Vaughan Davies 59 51.2115 12 Valter Cavecchia 59 51.9424 14 Thomas Ritschel 55 50.7756 15 Hiroyuki Okazaki 53 51.2864 16 Erik Veit 52 51.0046 17 Paul Underwood 49.8333 49.1463 18 Bouk de Water 45.6999 39.2130 19 Seonghwan Kim 43 50.5965 20 Zack Friedrichsen 35 50.7058

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Notes:

Number of primes

When counting primes we decided that if three people (persons) went together to find a prime, each should get credit for 1/3 of a prime. The same is true for projects, however programs get full credit for each prime (to encourage honest reporting of what programs where used). Persons, programs and projects are three separate categories and do not compete against each other.

For example, suppose the persons 'Carmody' and 'Caldwell' worked together and used the program 'PRP' to test candidates selected by the 'GFN 2^13 Sieving project', then completed their proofs using 'Proth.exe'. Then the persons 'Carmody' and 'Caldwell' would get 1/2 credit for each prime found; but the project 'GFN 2^13 Sieving project' and the programs 'PRP' and 'Proth.exe' would each get full credit.<\p>