A053648 - OEIS

%I #10 Jan 04 2022 18:53:11

%S 3,7,31,2,127,19,191,8191,13,71,107,131,131071,5,524287,47,83,647,

%T 2147483647,23,43,5843,13693,4300921,5843009,584300921,2305843009,

%U 5843009213,30584300921,43009213693,2305843009213693951,11,37,61,89,97,137,211,269,449,2111

%N Scan decimal expansion of Mersenne primes (A000668), recording all primes seen.

%e 19 and 191 are found in the Mersenne prime 8191.

%Y Cf. A000668.

%K nonn,base,less

%O 1,1

%A _Enoch Haga_, Feb 19 2000

%E Missing a(27) inserted and more terms from _Sean A. Irvine_, Jan 04 2022