Leon Marchal


A titan, as defined by Samuel Yates, is anyone who has found a titanic prime. This page provides data on those that have found these primes. The data below only reflects on the primes currently on the list. (Many of the terms that are used here are explained on another page.)

Proof-code(s): p85
E-mail address: (e-mail address unpublished)
Username Marchal (entry created on 5/16/2002 11:47:35 UTC)
Database id:371 (entry last modified on 5/7/2021 17:14:31 UTC)
Active primes:on current list: 0.3333 (unweighted total: 1), rank by number 1045
Total primes: number ever on any list: 0.3333 (unweighted total: 1)
Production score: for current list 39 (normalized: 0), rank by score 1000
Largest prime: 34790! - 1 ‏(‎142891 digits) via code p85 on 5/21/2002 07:41:30 UTC
Most recent: 34790! - 1 ‏(‎142891 digits) via code p85 on 5/21/2002 07:41:30 UTC
Entrance Rank: mean 55.00 (minimum 55, maximum 55)

Descriptive Data: (report abuse)

Tradtionally I'm a Bioprocess engineer (Wageningen University, The Netherlands). Have a PhD on enzymatic starch conversion. Worked some years in the starch and protein industry. Worked 3 years as manager development for a food and feed ingredients company in the Netherlands. After a sabbatical year together with Els cycling through Asia I founded Key2Brains. Key2Brains specializes in fast and confidential solving of innovation problems for the Food, Agro and Life Science market. We use an extensive team of excellent researchers and creative minds to solve small or larger innovation questions. More information can be found on http://www.Key2Brains.com Besides some hobbies (hiking, sailing, cycling) I have an interest in computer science i.e. distributed computing. I'm currently using some spare CPU capacity around here to participate in the prime search.

Surname: Marchal (used for alphabetizing and in codes).
Unverified primes are omitted from counts and lists until verification completed.
I am Leon Marchal and I would like to
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