id:A032492 - OEIS Search Results

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Numbers n such that 231*2^n+1 is prime.

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1, 4, 5, 7, 9, 11, 12, 13, 15, 27, 33, 65, 85, 89, 105, 120, 149, 161, 175, 229, 279, 295, 307, 355, 453, 528, 625, 697, 807, 831, 879, 901, 935, 988, 1265, 1432, 1645, 1761, 1899, 1939, 2497, 3101, 5176, 5181, 9809, 14025, 21765, 27333, 35271, 36717 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`Ray Ballinger, Proth Search Page` `Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for k < 300` `Wilfrid Keller, List of primes k.2^n - 1 for k < 300` `Index entries for sequences of n such that k2^n-1 (or k2^n+1) is prime`
	CROSSREFS	`Sequence in context: A094328 A081095 A080596 this_sequence A050560 A035243 A035255` `Adjacent sequences: A032489 A032490 A032491 this_sequence A032493 A032494 A032495`
	KEYWORD	`nonn,hard`
	AUTHOR	`njas`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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