id:A050778 - OEIS Search Results

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Primes that are ending primes after the iterated procedure of 'composite added to the sum of its prime factors reaches a prime'.

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11, 17, 19, 23, 29, 31, 41, 47, 53, 59, 71, 79, 83, 89, 103, 107, 109, 113, 127, 131, 149, 151, 167, 179, 191, 227, 229, 239, 241, 251, 263, 269, 271, 293, 311, 313, 317, 331, 337, 359, 373, 383, 401, 419, 431, 439, 443, 449, 461, 467, 479, 491, 503, 509, 521 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`E.g. 383 is ending prime for the following composites 182, 204, 218, 226, 228, 254, 329 and 341. For instance 341 (=11*31) -> 341 + (11+31) = 341 + 42 = 383.`
	CROSSREFS	`Cf. A050779, A050703-A050710.` `Sequence in context: A157996 A050713 A038966 this_sequence A049593 A019412 A111257` `Adjacent sequences: A050775 A050776 A050777 this_sequence A050779 A050780 A050781`
	KEYWORD	`nonn`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com), Sep 15 1999.`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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