id:A050708 - OEIS Search Results

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Prime reached after 4 iterations of composite added to sum of prime factors.

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32, 62, 63, 64, 69, 77, 98, 100, 102, 105, 110, 117, 171, 182, 186, 190, 195, 200, 217, 230, 234, 240, 246, 248, 270, 324, 354, 381, 388, 392, 400, 405, 410, 430, 436, 438, 444, 455, 456, 474, 481, 482, 483, 490, 528, 540, 568, 576, 582, 584, 598, 605, 625 (list; graph; listen)

	OFFSET	`0,1`
	EXAMPLE	`Iteration 1 -> 182 = 2.7.13 so 182 + (2+7+13) = 182 + 22 = 204 and composite.` `Iteration 2 -> 204 = 2.2.3.17 so 204 + (2+2+3+17) = 204 + 24 = 228 and composite.` `Iteration 3 -> 228 = 2.2.3.19 so 228 + (2+2+3+19) = 228 + 26 = 254 and composite.` `Iteration 4 -> 254 = 2.127 so 254 + (2+127) = 254 + 129 = 383 and prime.`
	CROSSREFS	`Cf. A050703-A050710.` `Sequence in context: A130447 A116284 A138555 this_sequence A132300 A116318 A122616` `Adjacent sequences: A050705 A050706 A050707 this_sequence A050709 A050710 A050711`
	KEYWORD	`nonn`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com), Aug 15 1999.`

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.

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