id:A092789 - OEIS Search Results

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a(n) = smallest prime of the form n! + p where p is prime.

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3, 5, 7, 13, 13, 19, 19, 43, 29, 31, 37, 43, 43, 67, 53, 59, 61, 67, 73, 73, 79, 103, 89, 113, 103, 103, 109, 109, 229, 137, 151, 137, 139, 163, 151, 157, 163, 283, 173, 179, 181, 363061, 193, 199, 199, 223, 331, 229, 229, 349, 239, 241, 5281, 257, 263, 269, 271 (list; graph; listen)

	OFFSET	`0,1`
	COMMENT	`n! + p is composite for n >= p since p divides n! for n >= p.`
	PROGRAM	`(PARI) nfactpm3(n) = { forprime(p=1, n, c=0; for(x=0, n, y=x!+p; if(isprime(y), c++; print1(y", "); break)); ) }`
	CROSSREFS	`Cf. A092789.` `Sequence in context: A098957 A018205 A121047 this_sequence A092793 A024909 A063241` `Adjacent sequences: A092786 A092787 A092788 this_sequence A092790 A092791 A092792`
	KEYWORD	`nonn`
	AUTHOR	`Cino Hilliard (hillcino368(AT)gmail.com), Apr 14 2004`

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Last modified July 23 17:35 EDT 2008. Contains 142285 sequences.

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