[seqfan] Re: am asking for help by someone who wants to program in in Mathematica, or MAPLE, or whatever

Robert Gerbicz robert.gerbicz at gmail.com
Wed Nov 14 01:02:00 CET 2012


And you can't go further, so there is no n for that n^k+n+1 is semiprime
for k=1,2,3,4,5.
Proof: v=n^5+n+1=(n^2+n+1)*(n^3-n^2+1), here n^2+n+1 is semiprime, so for
n>1 v=n^5+n+1 has got at least 3 factors (so bigomega(v)>2), hence not a
semiprime.


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