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A124111 Primes with record large values of the second smallest positive primitive root. 0

%I #2 Mar 31 2012 10:24:40

%S 5,7,11,23,31,191,409,1151,2161,2689,3361,4729,9601,14281,23209,31249,

%T 33049,55441,71761,110881,2116921,3384481,5109721,222855361,288940681,

%U 567719161,831143041,899978641

%N Primes with record large values of the second smallest positive primitive root.

%C Sequence begins at the first prime with at least 2 primitive roots, namely 5.

%e The smallest two positive primitive roots of a(26)=567719161 are 43 and 172. No integer less than 567719161 has a second root greater than or equal to 172.

%Y Cf. A002230.

%K nonn

%O 1,1

%A _Ken Takusagawa_, Nov 27 2006

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Last modified December 3 22:01 EST 2023. Contains 367540 sequences. (Running on oeis4.)