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A125647
Smallest odd prime base q such that p^6 divides q^(p-1) - 1, where p = Prime[n].
11
193, 1459, 14557, 152617, 2120879, 7654109, 24527681, 2342959, 90603883, 1657641497, 40373093, 2175429661, 1614357949, 119612113, 14635471219, 2816276179, 15591204869, 1006953931, 7726467079, 48931161299, 54908441659, 41985419521, 583493688221, 200335697059, 96891225583, 50303508131, 129847013561, 362253784469, 625810253147, 195406393583
OFFSET
1,1
PROG
(PARI) { a(n) = local(p, x, y); if(n==1, return(193)); p=prime(n); x=znprimroot(p^6)^(p^5); vecsort( vector(p-1, i, y=lift(x^i); while(!isprime(y), y+=p^6); y ) )[1] } - Max Alekseyev, May 30 2007
KEYWORD
nonn
AUTHOR
Alexander Adamchuk, Nov 29 2006
EXTENSIONS
More terms from Max Alekseyev, May 30 2007
STATUS
approved