1,1

Also numbers n such that (53*10^n-17)/9 is prime.

Makoto Kamada, Factorizations of 588...887.

Index entries for primes involving repunits.

Do[ If[ PrimeQ[(53*10^n - 17)/9], Print[n]], {n, 0, 10000}]

Sequence in context: A100358 A134136 A058775 this_sequence A111247 A045656 A129342

Adjacent sequences: A103020 A103021 A103022 this_sequence A103024 A103025 A103026

more,nonn

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