id:A066737 - OEIS Search Results

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Composite numbers that are concatenations of primes.

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22, 25, 27, 32, 33, 35, 52, 55, 57, 72, 75, 77, 112, 115, 117, 132, 133, 135, 172, 175, 177, 192, 195, 213, 219, 222, 225, 231, 232, 235, 237, 243, 247, 252, 253, 255, 259, 261, 267, 272, 273, 275, 279, 289, 297, 312, 315, 319, 322, 323, 325, 327, 329, 332 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`72 is the concatenation of primes 7 and 2. 132 is the concatenation of primes 13 and 2. 225 is the concatenation of 2, 2 and 5.`
	CROSSREFS	`Cf. A121609.` `Sequence in context: A053779 A034304 A121609 this_sequence A092631 A061371 A070809` `Adjacent sequences: A066734 A066735 A066736 this_sequence A066738 A066739 A066740`
	KEYWORD	`base,easy,nonn`
	AUTHOR	`Joseph L. Pe (joseph_l_pe(AT)hotmail.com), Jan 15 2002`
	EXTENSIONS	`More terms from Larry Reeves (larryr(AT)acm.org), Apr 03 2002`

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Last modified November 21 14:49 EST 2008. Contains 150807 sequences.

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