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A182624 Primes in A182623. 5

%I #13 Aug 18 2018 21:37:12

%S 7,13,29,61,101,107,199,211,229,241,419,449,467,479,769,823,829,859,

%T 991,1009,1021,1571,1601,1637,1667,1697,1733,1811,1847,1877,1901,1907,

%U 1931,3079,3109,3229,3271,3307,3331,3457,3499,3529,3541,3547

%N Primes in A182623.

%H Nathaniel Johnston, <a href="/A182624/b182624.txt">Table of n, a(n) for n = 1..2000</a>

%p lim:=1800: with(numtheory):A182624:={}:for n from 1 to lim do s:="": for d in divisors(n) do s:= cat(s,convert(convert(d, binary),string)): od: m:=convert(parse(s),decimal,binary):if(isprime(m))then A182624:=A182624 union {m};fi: od:

%p A182624:=sort(convert(A182624,list)):for n from 1 to nops(A182624) do if(A182624[n]>2*lim)then break:fi:printf("%d, ",A182624[n]):od: # _Nathaniel Johnston_, Apr 19 2011

%Y Cf. A000040, A182620, A182621, A182622, A182623.

%K nonn,base

%O 1,1

%A _Omar E. Pol_, Nov 23 2010

%E More terms from _Vincenzo Librandi_, Jan 30 2011

%E a(16) - a(44) from _Nathaniel Johnston_, Apr 19 2011

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Last modified August 11 01:05 EDT 2024. Contains 375059 sequences. (Running on oeis4.)