1,1

Also numbers n such that (58*10^n+41)/9 is prime.

Makoto Kamada, Factorizations of 644...449.

Index entries for primes involving repunits.

Do[ If[ PrimeQ[(58*10^n + 41)/9], Print[n]], {n, 0, 10000}]

Sequence in context: A128070 A101780 A050651 this_sequence A075528 A101485 A074072

Adjacent sequences: A103034 A103035 A103036 this_sequence A103038 A103039 A103040

more,nonn

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