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Science 21 May 2004:
Vol. 304. no. 5674, p. 1095
DOI: 10.1126/science.304.5674.1095
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News of the Week

NUMBER THEORY:
Proof Promises Progress in Prime Progressions

Barry Cipra

In setting out to prove that there are an infinite number of arithmetic progressions of prime numbers with four terms, two mathematicians appear to have proved the result for prime progressions of all lengths.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)