id:A050707 - OEIS Search Results

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Prime reached after 3 iterations of composite added to sum of prime factors.

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4, 16, 27, 28, 30, 42, 76, 87, 92, 95, 108, 114, 120, 124, 128, 133, 136, 147, 148, 154, 172, 196, 202, 204, 216, 222, 238, 242, 243, 244, 245, 255, 256, 260, 285, 286, 292, 308, 310, 325, 338, 340, 342, 350, 386, 412, 418, 422, 423, 426, 435, 440, 458, 464 (list; graph; listen)

	OFFSET	`0,1`
	EXAMPLE	`Iteration 1 -> 204 = 2.2.3.17 so 204 + (2+2+3+17) = 204 + 24 = 228 and composite.` `Iteration 2 -> 228 = 2.2.3.19 so 228 + (2+2+3+19) = 228 + 26 = 254 and composite.` `Iteration 3 -> 254 = 2.127 so 254 + (2+127) = 254 + 129 = 383 and prime.`
	CROSSREFS	`Cf. A050703-A050710.` `Sequence in context: A075576 A111350 A105078 this_sequence A046346 A134330 A097764` `Adjacent sequences: A050704 A050705 A050706 this_sequence A050708 A050709 A050710`
	KEYWORD	`nonn`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com), Aug 15 1999.`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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