Publications of (and about) Paul Erdös
Autor: Erdös, Paul; Shapiro, Harold N.
Title: On the least primitive root of a prime. (In English)
Source: Pac. J. Math. 7, 861-865 (1957).
Review: Let g(p) be the least positive primitive root of a prime p. The authors prove that g(p) = O(mc p ½) where c is a constant and m is the number of distinct prime factors of p-1. As m large, it is an improvement of a result of the reviewer: g(p) \leq 2m+1 p ½. The authors introduce a lemma and then apply Brun's method to obtain the result. The lemma runs as following: Let S and T be two sets with distinct integers, mod p. Then for any non-principal character \chi, we have |sumu in S, v in T \chi (u+v)|2 \leq p sumu in S 1 sumv in T 1.
Classif.: * 11N69 Distribution of integers in special residue classes
11A07 Congruences, etc.
Index Words: Number Theory
© European Mathematical Society & FIZ Karlsruhe & Springer-Verlag