1,2

Also numbers n such that (22*10^n+41)/9 is prime.

Makoto Kamada, Factorizations of 244...449.

Index entries for primes involving repunits.

Do[ If[ PrimeQ[(22*10^n + 41)/9], Print[n]], {n, 0, 10000}]

Sequence in context: A132757 A045135 A152813 this_sequence A041444 A041446 A042853

Adjacent sequences: A102952 A102953 A102954 this_sequence A102956 A102957 A102958

more,nonn

Robert G. Wilson v (rgwv(AT)rgwv.com), Dec 17 2004