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 A175173 Primes p such that 2^p+5 is also prime. 1
 3, 5, 11, 47, 53, 191, 34763 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS a(8) > 5*10^5. - Robert Price, Sep 18 2015 LINKS FORMULA A000040 INTERSECT A059242. [R. J. Mathar, May 02 2010] EXAMPLE For p=3, 2^3+5=13; p=5, 2^5+5=37; p=11, 2^11+5=2053 MATHEMATICA Select[Prime@ Range@ 1000, PrimeQ[2^# + 5] &] (* Michael De Vlieger, Sep 18 2015 *) PROG (Magma) [p: p in PrimesUpTo(7000) | IsPrime(2^p+5) ] CROSSREFS Sequence in context: A144467 A049883 A059242 * A268510 A004203 A201473 Adjacent sequences: A175170 A175171 A175172 * A175174 A175175 A175176 KEYWORD nonn AUTHOR Vincenzo Librandi, Mar 09 2010 EXTENSIONS a(7) from Robert Price, Sep 18 2015 STATUS approved

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Last modified November 30 04:37 EST 2022. Contains 358431 sequences. (Running on oeis4.)