46 arithmetic/arithmetic.progression.p
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This article is from the Puzzles FAQ, by Chris Cole chris@questrel.questrel.com and Matthew Daly mwdaly@pobox.com with numerous contributions by others.
46 arithmetic/arithmetic.progression.p
Is there an arithmetic progression of 20 or more primes?
arithmetic/arithmetic.progression.s
There is an arithmetic progression of 21 primes:
142072321123 + 1419763024680 i, 0 <= i < 21.
It was discovered on 30 November 1990, by programs running in the background
on a network of Sun 3 workstations in the Department of Computer Science,
University of Queensland, Australia.
See: Andrew Moran and Paul Pritchard, The design of a background job
on a local area network, Procs. 14th Australian Computer Science Conference,
1991, to appear.
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