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A063499 Primes of the form prime(n) + n!. 7
3, 5, 11, 31, 131, 733, 362903, 39916831, 355687428096059, 6402373705728061, 15511210043330985984000097, 8222838654177922817725562880000127, 815915283247897734345611269596115894272000000173 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Subsequence of A121926. - Michel Marcus, Apr 05 2015

LINKS

Harry J. Smith, Table of n, a(n) for n=1,...,18

MATHEMATICA

Select[Table[Prime[n] + n!, {n, 1, 60}], PrimeQ] (* Vincenzo Librandi, Apr 05 2015 *)

PROG

(PARI) for(n=1, 70, x=prime(n)+n!; if(isprime(x), print(x)))

(PARI) { 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)) ) } \\ Harry J. Smith, Aug 24 2009

(MAGMA) [a: n in [1..50] | IsPrime(a) where a is NthPrime(n) + Factorial(n) ]; // Vincenzo Librandi, Apr 05 2015

CROSSREFS

Cf. A064278 (Numbers n such that n! + prime(n) is prime). [From Alexander R. Povolotsky, Aug 13 2008]

Sequence in context: A048235 A154939 A121926 * A285381 A082856 A254402

Adjacent sequences:  A063496 A063497 A063498 * A063500 A063501 A063502

KEYWORD

easy,nonn

AUTHOR

Jason Earls, Jul 30 2001

STATUS

approved

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Last modified October 23 19:34 EDT 2018. Contains 316530 sequences. (Running on oeis4.)