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A198165 Primes from merging of 5 successive digits in decimal expansion of sqrt(2). 25

%I #16 Dec 14 2014 06:20:36

%S 56237,37309,78569,67187,48073,76679,66797,97379,79907,50387,34327,

%T 64157,15727,91229,70249,73721,12149,70999,35831,65927,55927,55799,

%U 11527,55997,59971,86201,20147,28517,88919,30871,14321,45083,50839,62603,51407,87253,72533

%N Primes from merging of 5 successive digits in decimal expansion of sqrt(2).

%C Leading zeros are not permitted, so each term is 5 digits in length.

%H Vincenzo Librandi, <a href="/A198165/b198165.txt">Table of n, a(n) for n = 1..1000</a>

%t With[{len=5},Select[FromDigits/@Partition[RealDigits[Sqrt[2],10,1000][[1]], len,1],IntegerLength[#]==len&&PrimeQ[#]&]]

%Y Cf. A103773, A103789, A103793, A103808, A103809, A103810, A103811, A103812, A104824, A104825, A104826, A104843, A104844, A104845, A104846, A104847, A104848, A104849, A104850, A198161, A198162, A198163, A198164, A198166, A198167, A198168, A198169, A198170, A198171, A198172, A198173, A198174, A198175, A104851, A198177.

%K nonn,base

%O 1,1

%A _Harvey P. Dale_, Oct 21 2011

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Last modified April 24 11:20 EDT 2024. Contains 371936 sequences. (Running on oeis4.)