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Explicit upper bound on the least primitive root modulo p2
International Journal of Number Theory ( IF 0.7 ) Pub Date : 2021-07-17
Bo Chen

In this paper, we give an explicit upper bound on h(p), the least primitive root modulo p2. Since a primitive root modulo p is not primitive modulo p2 if and only if it belongs to the set of integers less than p which are pth power residues modulo p2, we seek the bounds for N1(H) and N2(H) to find H which satisfies N1(H)N2(H)>0, where, N1(H) denotes the number of primitive roots modulo p not exceeding H, and N2(H) denotes the number of pth powers modulo p2 not exceeding H. The method we mainly use is to estimate the character sums contained in the expressions of the N1(H) and N2(H) above. Finally, we show that h(p)<p0.74 for all primes p. This improves the recent result of Kerr et al.



中文翻译:

最小原始根模 p2 的显式上限

在本文中,我们给出了一个明确的上限 H(), 最小原根模 2. 由于原始根模 不是原始模 2 当且仅当它属于小于 哪个是 次幂余数模 2,我们寻求边界 N1(H)N2(H) 找到 H 哪个满足 N1(H)-N2(H)>0, 在哪里, N1(H) 表示原始根模数 不超过 H, 和 N2(H) 表示数量 次幂模 2 不超过 H. 我们主要使用的方法是估计包含在表达式中的字符和N1(H)N2(H)以上。最后,我们证明H()<0.74 对于所有素数 . 这改进了 Kerr等人最近的结果

更新日期:2021-07-19
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