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 A062551 Primes of the form 3*n! + 1. 1
 7, 19, 73, 2161, 15121, 1088641, 10886401, 18681062401, 77556050216654929920001, 46533630129992957952000001, 789392510801080590501654036480000001 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Harry J. Smith, Table of n, a(n) for n=1,...,15 MATHEMATICA lst={}; Do[p=3*n!+1; If[PrimeQ[p], AppendTo[lst, p]], {n, 0, 5!}]; lst (* Vladimir Joseph Stephan Orlovsky, Jan 28 2009 *) Select[3*Range[40]! +1, PrimeQ] (* Harvey P. Dale, Jul 20 2018 *) PROG (PARI) for(n=1, 40, if(isprime(3*n!+1), print(3*n!+1))) (PARI) { n=0; for (m=0, 10^5, if(isprime(a=3*m! + 1), write("b062551.txt", n++, " ", a); if (n==15, break)) ) } \\ Harry J. Smith, Aug 08 2009 CROSSREFS Sequence in context: A002533 A111011 A144723 * A155390 A269784 A237436 Adjacent sequences:  A062548 A062549 A062550 * A062552 A062553 A062554 KEYWORD nonn AUTHOR Jason Earls, Jul 10 2001 STATUS approved

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Last modified October 19 15:46 EDT 2019. Contains 328223 sequences. (Running on oeis4.)