1,2

Also numbers n such that (5*10^n-11)/3 is prime.

Makoto Kamada, Factorizations of 166...663.

Index entries for primes involving repunits.

Do[ If[ PrimeQ[(5*10^n - 11)/3], Print[n]], {n, 0, 10000}]

Sequence in context: A166510 A076016 A107095 this_sequence A073983 A139319 A092925

Adjacent sequences: A102936 A102937 A102938 this_sequence A102940 A102941 A102942

more,nonn

Robert G. Wilson v (rgwv(AT)rgwv.com), Dec 16 2004