

A124111


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


0



5, 7, 11, 23, 31, 191, 409, 1151, 2161, 2689, 3361, 4729, 9601, 14281, 23209, 31249, 33049, 55441, 71761, 110881, 2116921, 3384481, 5109721, 222855361, 288940681, 567719161, 831143041, 899978641
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OFFSET

1,1


COMMENTS

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


LINKS



EXAMPLE

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.


CROSSREFS



KEYWORD

nonn


AUTHOR



STATUS

approved



