Harvey Dubner - Revision history

Drlesmgolden at 00:46, 24 June 2017

2017-06-24T00:46:32Z

Drlesmgolden at 00:43, 24 June 2017

2017-06-24T00:43:39Z

Drlesmgolden: Created page with "'''Harvey Dubner''' is a retired engineer and mathematician living in New Jersey, noted for his contributions to finding large prime numbers. In 1984, he and his son ..."

2017-06-23T10:24:40Z

Created page with "'''Harvey Dubner''' is a retired engineer and mathematician living in New Jersey, noted for his contributions to finding large prime numbers. In 1984, he and his son ..."

New page

'''Harvey Dubner''' is a retired engineer and mathematician living in [[New Jersey]], noted for his contributions to finding large [[prime number]]s. In 1984, he and his son Robert collaborated in developing the 'Dubner cruncher', a board which used a commercial [[FIR filter|finite impulse response filter chip]] to speed up dramatically the multiplication of medium-sized [[arbitrary-precision arithmetic|multi-precision]] numbers, to levels competitive with supercomputers of the time, though nowadays his focus has changed to efficient implementation of [[Fast Fourier transform|FFT-based]] algorithms on personal computers.

He has found many large prime numbers of special forms: [[repunit]]s, prime [[Fibonacci]] and [[Lucas numbers]], [[twin primes]], [[Sophie Germain prime]]s, and primes in [[arithmetic progression]].<ref>{{cite web|last=Caldwell|first=Chris|title=Harvey Dubner|url=http://primes.utm.edu/bios/page.php?id=5|work=[[The Prime Pages]]|accessdate=29 April 2013}}</ref> In 1993 he was responsible for more than half the known primes of more than two thousand digits.

Dubner was also the first to publish a paper on the first [[blackjack]] point count (The High Low Count) which is used by most blackjack card counters today. This was presented at the [[Fall Joint Computer Conference]] held in [[Las Vegas Valley|Las Vegas]] in 1963 at a panel titled "Using Computers in Games of Chance and Skill".

An extensive biography of Dubner based on interviews with him and his family is presented in <i>Never Split Tens</i> by [[Les Golden]].

==References==
{{reflist}}

==External links==
*[http://www.informatik.uni-trier.de/~ley/db/indices/a-tree/d/Dubner:Harvey.html an incomplete list of Dubner's publications]

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 Dubner was also the first to publish a paper on the first [[blackjack]] point count (The High Low Count) which is used by most blackjack card counters today.  This was presented at the [[Fall Joint Computer Conference]] held in [[Las Vegas Valley|Las Vegas]] in 1963 at a panel titled "Using Computers in Games of Chance and Skill".
 An extensive biography of Dubner based on interviews with him and his family and highlighting the importance of his development of the "Hi-Lo" system for blackjack, is presented in the novel <i>Never Split Tens</i> by [[Les Golden]].
 ==References==