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Search: id:A063499
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| A063499 |
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Primes of form p(n) + n!, where p(n) is the n-th prime. |
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+0
3
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| 3, 5, 11, 31, 131, 733, 362903, 39916831, 355687428096059, 6402373705728061, 15511210043330985984000097, 8222838654177922817725562880000127, 815915283247897734345611269596115894272000000173
(list; graph; listen)
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OFFSET
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1,1
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LINKS
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Harry J. Smith, Table of n, a(n) for n=1,...,18
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PROGRAM
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(PARI) for(n=1, 70, x=prime(n)+n!; if(isprime(x), print(x)))
(PARI) { allocatemem(932245000); n=0; f=1; for (m=1, 10^9, f*=m; if (isprime(a=prime(m) + f), write("b063499.txt", n++, " ", a); if (n==18, break)) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Aug 24 2009]
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CROSSREFS
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Cf. A064278 "Numbers n such that n! + prime(n) is prime." [From Alexander R. Povolotsky (pevnev(AT)juno.com), Aug 13 2008]
Sequence in context: A048235 A154939 A121926 this_sequence A082856 A060881 A035345
Adjacent sequences: A063496 A063497 A063498 this_sequence A063500 A063501 A063502
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KEYWORD
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easy,nonn
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AUTHOR
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Jason Earls (zevi_35711(AT)yahoo.com), Jul 30 2001
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