1,2

Also numbers n such that (46*10^n+71)/9 is prime.

Makoto Kamada, Factorizations of 511...119.

Index entries for primes involving repunits.

Do[ If[ PrimeQ[(46*10^n + 71)/9], Print[n]], {n, 0, 10000}]

Sequence in context: A046932 A015821 A091711 this_sequence A077790 A069119 A067317

Adjacent sequences: A103004 A103005 A103006 this_sequence A103008 A103009 A103010

more,nonn

Robert G. Wilson v (rgwv(AT)rgwv.com), Jan 18 2005