Hans Ivar Riesel (May 28, 1929 in Stockholm – December 21, 2014) was a Swedish mathematician who discovered the 18th Mersenne prime in 1957, using the computer BESK:[1][2] this prime is 23217-1 and consists of 969 digits. He held the record for the largest known prime from 1957 to 1961, when Alexander Hurwitz discovered a larger one.[3] Riesel also discovered the Riesel numbers as well as developing the Lucas–Lehmer–Riesel test. After having worked at the Swedish Board for Computing Machinery, he was awarded his Ph.D. from Stockholm University in 1969 for his thesis Contributions to numerical number theory,[4][5] and in the same year joined the Royal Institute of Technology as a senior lecturer and associate professor.
^Tattersall, James J. (2005). Elementary Number Theory in Nine Chapters (2nd ed.). Cambridge University Press. p. 141. ISBN 0-521-85014-2.
^Devlin, Keith J. (1999). Mathematics: The New Golden Age (2nd ed.). Columbia University Press. p. 14. ISBN 0231116381.
^Ny Teknik, 16 september 2008: Nytt primtalsrekord satt i dag
Hans Ivar Riesel (May 28, 1929 in Stockholm – December 21, 2014) was a Swedish mathematician who discovered the 18th Mersenne prime in 1957, using the...
Riesel may refer to: HansRiesel (1929–2014), Swedish mathematician who discovered a Mersenne prime Victor Riesel (1913–1995), American labor union journalist...
mathematics: Is 509,203 the smallest Riesel number? (more unsolved problems in mathematics) In 1956, HansRiesel showed that there are an infinite number...
Springer-Verlag. doi:10.1007/978-1-4684-9316-0. ISBN 0-387-94777-9. HansRiesel (1994). Prime Numbers and Computer Methods for Factorization. Progress...
67–72. January 1953. doi:10.1090/S0025-5718-53-99372-7. ISSN 0025-5718. Riesel, Hans (January 1958). "A New Mersenne Prime". Mathematics of Computation. 12...
CiteSeerX 10.1.1.174.660. doi:10.2140/pjm.1985.118.449. MR 0789184. HansRiesel (1994). Prime Numbers and Computer Methods for Factorization. Progress...
another Fermat prime is less than one in a billion. Anders Bjorn and HansRiesel estimated the number of square factors of Fermat numbers from F5 onward...
program[citation needed], but most of those calculations were done by SMIL. In 1957 HansRiesel used BESK to discover a Mersenne prime with 969 digits - the largest...
Campbell, The SA Generals and the Rise of Nazism 'Sport und Staat Turnverein Riesel, History Archived 24 July 2011 at the Wayback Machine Liz Jewitt How successful...
House of Representatives (1965–1971). Tom Nieporte, 86, American golfer. HansRiesel, 85, Swedish mathematician. Sitor Situmorang, 91, Indonesian poet and...
constant is at most 7, improving the earlier upper bound of 19 obtained by HansRiesel and R. C. Vaughan. Schnirelmann's constant is at least 3; Goldbach's...
and is deprecated. Cunningham project Riesel 1994, p. 309 Riesel 1994, p. 305 Riesel 1994, p. 165 Riesel, Hans (1994). Prime numbers and computer methods...
Garnault Anton Hartstein Herbert Holl Mustapha Khayati Ndjangani Lungela Rene Riesel Christian Sebastiani Patrick Straram René Viénet Erwin Eisch Heinz Hofl...
translated by Maser, H., New York: Chelsea, ISBN 978-0-8284-0191-3 Riesel, Hans (1994), Prime Numbers and Computer Methods for Factorization (second...
deutschen Sports, Verlag Bartels & Wernitz. 'Sport und Staat Turnverein Riesel, History Archived 2011-07-24 at the Wayback Machine Liz Jewitt How successful...
). Addison Wesley. pp. 222–227. ISBN 0-201-53082-1. Zbl 0833.68049. Riesel, Hans (1994). Prime Numbers and Computer Methods for Factorization. Progress...
(PDF). Journal of Integer Sequences. 15 (9): Article 12.9.7. MR 3005530. Riesel, Hans (1994). Prime Numbers and Computer Methods for Factorization (2nd ed...
Computational Methods in Number Theory, Vol. 154, Amsterdam, 1982, pp. 141–157. Riesel, H. Prime Numbers and Computer Methods for Factorisation, Birkhauser, 1985...
Padovan who attributed its discovery to Dutch architect Hans van der Laan in his 1994 essay Dom. Hans van der Laan : Modern Primitive. The sequence was described...
Laws: from Euler to Eisenstein. Berlin: Springer. ISBN 3-540-66957-4. Riesel, Hans (1994), Prime Numbers and Computer Methods for Factorization (second...
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