id:A050774 - OEIS Search Results

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Iterated procedure 'composite k added to sum of its prime factors reaches a prime' yields 7 skipped primes.

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39, 40, 58, 78, 205, 272, 330, 341, 357, 437, 475, 476, 520, 533, 551, 616, 738, 833, 1105, 1184, 1274, 1984, 2262, 2312, 2652, 2964, 3008, 3010, 3198, 3444, 3776, 4386, 5530, 5831, 6020, 6204, 6360, 6768, 7056, 7380, 7420, 7930, 8322, 8835, 8844, 8991 (list; graph; listen)

	OFFSET	`0,1`
	EXAMPLE	`a(1)=39 + (3+13) = 55 + (5+11) = ending prime 71. Between 39 and 71 one finds 7 primes 41, 43, 47, 53, 59, 61 and 67.`
	CROSSREFS	`Cf. A050703, A050710.` `Sequence in context: A088344 A022995 A023481 this_sequence A041759 A061756 A119028` `Adjacent sequences: A050771 A050772 A050773 this_sequence A050775 A050776 A050777`
	KEYWORD	`nonn`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com), Sep 15 1999.`

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.

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