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arXiv 2007.11062math.NT
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关于素数和实用数

On primes and practical numbers

Carl Pomerance, Andreas Weingartner

摘要:

如果$[1,n]$中的每个整数都可以表示为$n$的正因子的子集和,则数$n$是实用的。我们考虑的分布的实际数字,也转移素数,改进郭和Weingartner定理。此外,还证明了Margenstern的一个猜想,即所有大奇数都是一个素数与一个实际数之和.我们还考虑了一个类似的总理$k$ -元组猜想的实际数字,证明了“正确的”上界,并为对,改进的下界Melfi。

英文摘要:

A number $n$ is practical if every integer in $[1,n]$ can be expressed as a subset sum of the positive divisors of $n$. We consider the distribution of practical numbers that are also shifted primes, improving a theorem of Guo and Weingartner. In addition, essentially proving a conjecture of Margenstern, we show that all large odd numbers are the sum of a prime and a practical number. We also consider an analogue of the prime $k$-tuples conjecture for practical numbers, proving the "correct" upper bound, and for pairs, improving on a lower bound of Melfi.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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