id:A083472 - OEIS Search Results

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Smallest prime p such that the backward concatenation of n consecutive decreasing primes starting with p is a prime.

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2

2, 5, 29, 59, 37, 17, 193, 59, 167, 149, 103, 563, 109, 107, 149, 317, 409, 829, 283, 263, 467, 107, 89, 3181, 313, 113, 431, 521, 739, 577, 487, 617, 1601, 937, 167, 991, 2699, 293, 1481, 3593, 4943, 593, 541, 673, 241, 719, 1217, 449, 421, 1667, 337, 353, 1297 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`a(3) = 29 as the concatenation of 29,23 and 19, i.e. 292319, is a prime.`
	CROSSREFS	`Cf. A083471.` `Adjacent sequences: A083469 A083470 A083471 this_sequence A083473 A083474 A083475` `Sequence in context: A161500 A061351 A126107 this_sequence A057794 A073715 A104083`
	KEYWORD	`base,nonn`
	AUTHOR	`Amarnath Murthy and Meenakshi Srikanth (amarnath_murthy(AT)yahoo.com), May 02 2003`
	EXTENSIONS	`More terms from David Wasserman (wasserma(AT)spawar.navy.mil), Nov 15 2004`

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Last modified November 9 12:23 EST 2009. Contains 166233 sequences.

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