id:A073646 - OEIS Search Results

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Least number formed by concatenating prime factors of n in base 10.

+0
3

1, 2, 3, 22, 5, 23, 7, 222, 33, 25, 11, 223, 13, 27, 35, 2222, 17, 233, 19, 225, 37, 112, 23, 2223, 55, 132, 333, 227, 29, 235, 31, 22222, 113, 172, 57, 2233, 37, 192, 133, 2225, 41, 237, 43, 1122, 335, 223, 47, 22223, 77, 255, 173, 1322, 53, 2333, 115, 2227 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`a(n)<=A037276(n) for all n and a(n)=A037276(n) for n<22, a(22) = a(2*11) = 112 <> A037276(22) = 211.`
	EXAMPLE	`a(6) = a(23) = 23 < 32; a(66) = a(23*11) = 1123 < 1132 < 2113 < 2311 < 3112 < 3211.`
	CROSSREFS	`Different from A037276. Cf. A084797.` `Sequence in context: A141458 A080670 A073647 this_sequence A109671 A037276 A068190` `Adjacent sequences: A073643 A073644 A073645 this_sequence A073647 A073648 A073649`
	KEYWORD	`nonn,base`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Aug 29 2002`

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

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