OFFSET
1,1
COMMENTS
Primes p such that (((((((((p+1)/2)+3)/4)+5)/6)+7)/8)+9)/10 are prime numbers.
There is no requirement of the intermediate numbers on the level ((((((((p+1)/2)+3)/4)+5)/6)+7)/8)+9
to be prime or composite.
MATHEMATICA
lst={}; Do[p=Prime[n]; If[PrimeQ[(((((((((p+1)/2)+3)/4)+5)/6)+7)/8)+9)/10], AppendTo[lst, p]], {n, 9!}]; lst
Select[Prime[Range[200000]], PrimeQ[(#+3839)/3840]&] [by Harvey P. Dale, Dec. 13, 2010]
CROSSREFS
KEYWORD
nonn,less
AUTHOR
Vladimir Joseph Stephan Orlovsky, Jun 25 2009
EXTENSIONS
Definition simplified by R. J. Mathar, Sep 23 2009
STATUS
approved