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A263959
Number of decimal digits in A069151(n).
0
1, 2, 4, 355, 499, 1171, 1543, 5719
OFFSET
1,2
COMMENTS
Subset of A227530 (Copeland-Erdős constant primes) corresponding to concatenation of a full (non-truncated) final prime.
a(9) > 459970. - Eric W. Weisstein (according to Mark Rodenkirch as of Nov 21 2015)
LINKS
Eric Weisstein's World of Mathematics, Consecutive Number Sequences
Eric Weisstein's World of Mathematics, Integer Sequence Primes
Eric Weisstein's World of Mathematics, Smarandache-Wellin Prime
MATHEMATICA
Cases[FromDigits /@ Rest[FoldList[Join, {}, IntegerDigits[Prime[Range[10^3]]]]], p_?PrimeQ :> IntegerLength[p]]
PROG
(PARI) p=""; for(n=1, 1e4, p=concat(p, prime(n)); if(ispseudoprime( eval(p)), print1(#Str(p)", "))) \\ Altug Alkan, Oct 30 2015
CROSSREFS
Cf. A227529 (Copeland-Erdős constant primes).
Cf. A227530 (decimal digits in n-th Copeland-Erdős constant prime).
Sequence in context: A012618 A012557 A012562 * A216024 A247220 A012753
KEYWORD
nonn,base,more
AUTHOR
Eric W. Weisstein, Oct 30 2015
STATUS
approved