id:A081412 - OEIS Search Results

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Largest prime divisors of differences between consecutive primes.

+0
2

2, 2, 2, 2, 2, 2, 2, 3, 2, 3, 2, 2, 2, 3, 3, 2, 3, 2, 2, 3, 2, 3, 2, 2, 2, 2, 2, 2, 7, 2, 3, 2, 5, 2, 3, 3, 2, 3, 3, 2, 5, 2, 2, 2, 3, 3, 2, 2, 2, 3, 2, 5, 3, 3, 3, 2, 3, 2, 2, 5, 7, 2, 2, 2, 7, 3, 5, 2, 2, 3, 2, 3, 3, 2, 3, 2, 2, 2, 5, 2, 5, 2, 3, 2, 3, 2, 2, 2, 2, 3, 2, 2, 2, 2, 3, 3, 2, 3, 3, 5, 3, 3, 2, 3, 5 (list; graph; listen)

	OFFSET	`2,1`
	COMMENT	`If a(n)=2, then corresponding prime-difference is a power of 2.`
	FORMULA	`a(n)=A006530[A001223(n)]`
	EXAMPLE	`a(n)=2 for twin-prime differences.`
	MATHEMATICA	`Table[FactorInteger[Prime[w+1]-Prime[w]][[ -1, 1]], {w, 2, 256}]`
	CROSSREFS	`Cf. A001223, A006530, A081413, A000230.` `Sequence in context: A001991 A147793 A052298 this_sequence A082863 A029411 A165093` `Adjacent sequences: A081409 A081410 A081411 this_sequence A081413 A081414 A081415`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Apr 02 2003`

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Last modified December 7 23:50 EST 2009. Contains 170430 sequences.

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