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

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

Offset: 1

Author

Ken Takusagawa, Nov 27 2006

Keywords

• nonn
• more

Comments

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

Examples

			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

Cf. A002230.