id:A084559 - OEIS Search Results

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Smallest a(n)>n such that concatenation of numbers from n to a(n) is a prime; a(n)=0 if no such concatenation exists.

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0, 3, 19, 9, 17, 7, 13, 9, 187, 0, 309, 13 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`There is no such prime starting e.g. with 1 and 10 (and 100?). For large a(n), primes may be only probable.`
	EXAMPLE	`a(4)=9 because 456789 is a prime.`
	CROSSREFS	`Cf. A030458, A030471, A052087, A052088, A052089.` `Sequence in context: A078096 A139429 A114365 this_sequence A145688 A043073 A022128` `Adjacent sequences: A084556 A084557 A084558 this_sequence A084560 A084561 A084562`
	KEYWORD	`more,nonn,base`
	AUTHOR	`Zak Seidov (zakseidov(AT)yahoo.com), Jun 27 2003`

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