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A124111
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Primes with record large values of the second smallest positive primitive root.
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0
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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
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1,1
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COMMENTS
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Sequence begins at the first prime with at least 2 primitive roots, namely 5.
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LINKS
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EXAMPLE
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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.
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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