arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1607.02543math.NT
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等差数列中最小素数的下界

A lower bound for the least prime in an arithmetic progression

Junxian Li, Kyle Pratt, George Shakan

摘要:

将$k$固定为正整数,并令$\ell$与$k$互质。令$p(k,\ell)$表示等价于$\ell \pmod{k}$的最小素数,并将$P(k)$设置为所有$p(k,\ell)$的最大值。我们寻求$P(k)$的下界。特别是,我们表明,几乎每一个$k$之一有$P(k) \gg ϕ(k) \log k \log_2 k \log_4 k / \log_3 k,$回答福特,绿色,Konyangin,梅纳德,和道的问题。我们依赖于他们最近关于素数之间大间隔的工作。我们主要的新想法是使用筛权不仅可以捕获素数,还可以捕获素数的小倍数。我们还给出了一个启发式的建议,$\liminf_{k} \frac{P(k)}{ ϕ(k) \log^2 k} = 1.$

英文摘要:

Fix $k$ a positive integer, and let $\ell$ be coprime to $k$. Let $p(k,\ell)$ denote the smallest prime equivalent to $\ell \pmod{k}$, and set $P(k)$ to be the maximum of all the $p(k,\ell)$. We seek lower bounds for $P(k)$. In particular, we show that for almost every $k$ one has $P(k) \gg ϕ(k) \log k \log_2 k \log_4 k / \log_3 k,$ answering a question of Ford, Green, Konyangin, Maynard, and Tao. We rely on their recent work on large gaps between primes. Our main new idea is to use sieve weights to capture not only primes, but also small multiples of primes. We also give a heuristic which suggests that $\liminf_{k} \frac{P(k)}{ ϕ(k) \log^2 k} = 1.$

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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