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%I #10 Mar 18 2018 04:00:10
%S 29,227,2237,22229,222247,2222239,22222253,222222227,2222222243,
%T 22222222273,222222222301,2222222222243,22222222222229,
%U 222222222222227,2222222222222281,22222222222222301,222222222222222281
%N Next prime associated with A091628.
%C Sequence arising in _Farideh Firoozbakht_'s solution to Prime Puzzle 251 - 23 is the only pointer prime (A089823) not containing the digit "1".
%C The monotonically increasing value of successive product of digits (A091629) strongly suggests that in successive n the digit 1 must be present.
%H Carlos Rivera's Prime Puzzles and Problems Connection, <a href="http://www.primepuzzles.net/puzzles/puzz_251.htm">Puzzle 251, Pointer primes</a>
%F a(n) = A007918(A091628(n)+1).
%e a(1) = nextprime(23+1) = 29.
%o (PARI) a(n) = nextprime((10^(n+1) - 1)/9*2 + 2); \\ _Michel Marcus_, Mar 18 2018
%Y Cf. A007918, A089823, A091628, A091629, A091630, A091632.
%K base,easy,nonn
%O 1,1
%A _Enoch Haga_, Jan 24 2004
%E Edited and extended by _Ray Chandler_, Feb 07 2004
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