Harvey Dubner

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

He has found many large prime numbers of special forms: repunits, prime Fibonacci and Lucas numbers, twin primes, Sophie Germain primes, and primes in arithmetic progression. In 1993 he was responsible for more than half the known primes of more than two thousand digits.

[edit] References:

http://www.informatik.uni-trier.de/~ley/db/indices/a-tree/d/Dubner:Harvey.html is an incomplete list of Dubner's publications.