1,2

Also numbers n such that (44*10^n-17)/9 is prime.

Makoto Kamada, Factorizations of 488...887.

Index entries for primes involving repunits.

Do[ If[ PrimeQ[(44*10^n - 17)/9], Print[n]], {n, 0, 10000}]

Sequence in context: A051640 A119354 A088207 this_sequence A014112 A068040 A005998

Adjacent sequences: A102996 A102997 A102998 this_sequence A103000 A103001 A103002

more,nonn

Robert G. Wilson v (rgwv(AT)rgwv.com), Jan 17 2005