id:A083738 - OEIS Search Results

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Pseudoprimes to bases 2,3 and 7.

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1105, 2465, 10585, 18721, 29341, 46657, 75361, 104653, 115921, 162401, 226801, 252601, 278545, 294409, 314821, 334153, 340561, 399001, 410041, 449065, 488881, 512461, 530881, 534061, 552721, 574561, 658801, 721801, 852841, 1024651 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`F. Richman, Primality testing with Fermat's little theorem`
	FORMULA	`a(n) = n-th positive integer k(>1) such that 2^(k-1) = 1 (mod k), 3^(k-1) = 1 (mod k) and 7^(k-1) = 1 (mod k)`
	EXAMPLE	`a(1)=1105 since it is the first number such that 2^(k-1) = 1 (mod k), 3^(k-1) = 1 (mod k) and 7^(k-1) = 1 (mod k)`
	PROGRAM	`Assembly`
	CROSSREFS	`Adjacent sequences: A083735 A083736 A083737 this_sequence A083739 A083740 A083741` `Sequence in context: A052155 A097102 A102924 this_sequence A066163 A036105 A036103`
	KEYWORD	`easy,nonn`
	AUTHOR	`Serhat Sevki Dincer (sevki(AT)ug.bilkent.edu.tr), May 05 2003`

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.

AT&T Labs Research