id:A050775 - OEIS Search Results

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Iterated procedure 'composite k added to sum of its prime factors reaches a prime' yields 8 skipped primes.

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16, 36, 74, 80, 81, 86, 115, 119, 121, 123, 141, 215, 266, 276, 360, 451, 465, 572, 779, 868, 1548, 1624, 1674, 1763, 1917, 1925, 2196, 2331, 2368, 2730, 3108, 3306, 3430, 3816, 4452, 4575, 5110, 5312, 5412, 6273, 6324, 6820, 7632, 8772, 9027, 9204, 9435 (list; graph; listen)

	OFFSET	`0,1`
	EXAMPLE	`a(6)=86 + (2+43) = ending prime 131. Between 86 and 131 one finds 8 primes 89, 97, 101, 103, 107, 109, 113 and 127.`
	CROSSREFS	`Cf. A050703, A050710.` `Sequence in context: A062312 A031360 A125240 this_sequence A022040 A074985 A069262` `Adjacent sequences: A050772 A050773 A050774 this_sequence A050776 A050777 A050778`
	KEYWORD	`nonn`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com), Sep 15 1999.`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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