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A remark on Chen’s theorem (II)

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Abstract

Let p denote a prime and P 2 denote an almost prime with at most two prime factors. The author proves that for sufficiently large x,

where the constant 1.13 constitutes an improvement of the previous result 1.104 due to J. Wu.

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Authors and Affiliations

  1. Department of Mathematics, Tongji University, Shanghai, 200092, China

    Yingchun Cai

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  1. Yingchun Cai
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Correspondence to Yingchun Cai.

Additional information

Project supported by the National Natural Science Foundation of China (Nos. 10171060, 10171076, 10471104).

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Cai, Y. A remark on Chen’s theorem (II). Chin. Ann. Math. Ser. B 29, 687–698 (2008). https://doi.org/10.1007/s11401-007-0234-8

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  • DOI: https://doi.org/10.1007/s11401-007-0234-8

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