Hans Riesel (1929–2014)
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person 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 reflect on the primes currently on the list. (Many of the terms that are used here are explained on another page.)

Proof-code(s): BR
E-mail address: (e-mail address unpublished)
Username: Riesel (entry created on 01/18/2000)
Database id:116 (entry last modified on 10/05/2015)
Active primes:This entry has no primes on the current list.
Total primes: number ever on any list: 0.5 (unweighted total: 1)
Production score: no primes, so no score for current list, total 28.7119

Descriptive Data: (report abuse)

Obituary: http://www.mersenneforum.org/showpost.php?p=411994&postcount=470

[From his web page:] I was born in Stockholm in 1929. I have studied mathematics and numerical analysis at the University of Stockholm. My career with computers started back in 1953 with Sweden's first electronic computer, the BESK (Binary Electronic Sequence Calculator), a variant of the so-called Princeton machine. From 1960 to 1963 I served as head of the math department of the Swedish Board for Computing Machinery, an organization which was swallowed up by SAFAD, the Swedish Agency for Administrative Development. I served the SAFAD until 1969, when I was appointed lecturer in numerical analysis at the Royal Institute of Technology in Stockholm. My scientific work has mainly been performed in Computational Mathematics. I have published one major book, "Prime Numbers and Computer Methods for Factorization", Birkhäuser, Boston 1985, 2nd ed. 1994.

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Surname: Riesel (used for alphabetizing and in codes)
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