Given integers k >= 2 and l >= 3, let S-k,l(*) stand for the of those positive integers n which can be written as n= p(1)(k) + p(2)(k) + ...+ p(l)(k) , where p(1) , p(2) ,... , p(l) are distinct prime factors of n. We study the properties of the sets S-k,l(*) and we show in particular that given any odd l >= 3, # boolean OR(infinity)(k=2) S-k,l(*) = +infinity.
机构:
Huaiyin Normal Univ, Sch Math Sci, Huaian 223300, Jiangsu, Peoples R ChinaHuaiyin Normal Univ, Sch Math Sci, Huaian 223300, Jiangsu, Peoples R China
Guo, Victor J. W.
Jiang, Qiang-Qiang
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机构:
East China Normal Univ, Dept Math, Shanghai 200241, Peoples R ChinaHuaiyin Normal Univ, Sch Math Sci, Huaian 223300, Jiangsu, Peoples R China