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A050706 Prime reached after 2 iterations of composite added to sum of prime factors. 0
8, 9, 18, 22, 24, 25, 36, 39, 40, 54, 78, 80, 81, 91, 94, 99, 104, 106, 115, 119, 121, 122, 126, 134, 138, 142, 144, 146, 152, 159, 164, 170, 174, 187, 189, 214, 218, 219, 226, 228, 231, 232, 237, 250, 258, 262, 264, 265, 266, 272, 274, 276, 280, 282, 288, 289 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

EXAMPLE

Iteration 1 -> 226 = 2.113 so 226 + (2+113) = 226 + 115 = 341 and composite.

Iteration 2 -> 341 = 11.31 so 341 + (11+31) = 341 + 42 = 383 and prime.

CROSSREFS

Cf. A050703-A050710.

Sequence in context: A041551 A057104 A095191 * A159836 A069809 A067544

Adjacent sequences:  A050703 A050704 A050705 * A050707 A050708 A050709

KEYWORD

nonn

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com), Aug 15 1999.

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Last modified February 16 01:56 EST 2012. Contains 205860 sequences.