id:A141305 - OEIS Search Results

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Primes p such that q=(p-1)/2 is also prime and 2 is a primitive root mod q; that is, q is in A001122.

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5, 7, 11, 23, 59, 107, 167, 263, 347, 359, 587, 839, 887, 983, 1019, 1307, 1319, 2039, 2459, 2903, 2999, 3467, 3803, 3863, 3947, 4139, 4283, 4679, 4919, 5099, 5387, 5399, 5483, 5639, 5879, 5927, 6599, 6827, 6983, 7079, 7559, 7607, 7703, 8039, 8699, 8747 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`These primes are a subset of the safe primes, A005385. These primes produce the longest possible cycles, (p-3)/2, in the squaring mod p map. See A037178.`
	CROSSREFS	`Sequence in context: A092307 A005385 A075705 this_sequence A067289 A036491 A036490` `Adjacent sequences: A141302 A141303 A141304 this_sequence A141306 A141307 A141308`
	KEYWORD	`nonn`
	AUTHOR	`T. D. Noe (noe(AT)sspectra.com), Jun 24 2008`

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Last modified December 2 15:58 EST 2008. Contains 150992 sequences.

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