id:A096172 - OEIS Search Results

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Largest prime factor of n^4+1.

+0
4

2, 17, 41, 257, 313, 1297, 1201, 241, 193, 137, 7321, 233, 14281, 937, 1489, 65537, 41761, 929, 3833, 160001, 97241, 3209, 139921, 331777, 11489, 26881, 6481, 614657, 353641, 3361, 1129, 61681, 6113, 1336337, 750313, 98801, 10529, 50857, 1156721 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`a(1)=2 because 1^4+1=2, a(2)=17: 2^4+1=17, a(8)=241: 8^4+1=4097=17*241.`
	CROSSREFS	`Cf. A000068 n^4+1 is prime, A037896 primes of the form n^4+1, A096169 (n^4+1)/2 is prime, A069170 primes of the form (n^4+1)/2, A096171 n^4+1 is an odd semiprime.` `Adjacent sequences: A096169 A096170 A096171 this_sequence A096173 A096174 A096175` `Sequence in context: A031906 A045390 A072582 this_sequence A120745 A100271 A046973`
	KEYWORD	`nonn`
	AUTHOR	`Hugo Pfoertner (hugo(AT)pfoertner.org), Jun 19 2004`

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Last modified October 6 16:13 EDT 2008. Contains 144667 sequences.

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