Search: id:A097977
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%I A097977
%S A097977 2,13,67,1151,9277,1616609,1874723
%N A097977 Smallest prime p such that p+n is the product of exactly n distinct primes.
%e A097977 a(4)=1151, for example, is the first of a sequence of primes that continues 
               with 1361, 2141, 2411, 2801, 3251, 3881, 3923, ...with the property 
               1151+4=3*5*7*11, 1361+4=3*5*7*13, 2141+5=3*5*11*13, 2801+4=3*5*11*17, 
               3251+4=3*5*7*31, 3881+4=3*5*7*37, 3923+4=3*7*11*17, ...
%t A097977 Table[k := 1; While[Not[Length[FactorInteger[Prime[k] + n]] == n], k++ 
               ]; Prime[k], {n, 1, 7}] -Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), 
               Apr 03 2006
%Y A097977 Sequence in context: A106999 A054566 A038144 this_sequence A136780 A128743 
               A097349
%Y A097977 Adjacent sequences: A097974 A097975 A097976 this_sequence A097978 A097979 
               A097980
%K A097977 hard,nonn
%O A097977 1,1
%A A097977 Lekraj Beedassy (blekraj(AT)yahoo.com), Sep 07 2004
%E A097977 2 more terms from Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), 
               Apr 03 2006

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