id:A106867 - OEIS Search Results

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Primes of the form 2x^2+xy+3y^2, with x and y any integer.

+0
3

2, 3, 13, 29, 31, 41, 47, 71, 73, 127, 131, 139, 151, 163, 179, 193, 197, 233, 239, 257, 269, 277, 311, 331, 349, 353, 397, 409, 439, 443, 461, 487, 491, 499, 509, 541, 547, 577, 587, 601, 647, 653, 673, 683, 739, 761, 811, 823, 857, 859, 863, 887, 929, 947 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Discriminant=-23. See A106856 for more information.` `Primes p such that the polynomial x^3-x-1 is irreducible over Zp. The polynomial discriminant is also -23. - T. D. Noe (noe(AT)sspectra.com), May 13 2005`
	CROSSREFS	`Cf. A086965 (number of distinct zeros of x^3-x-1 mod prime(n)).` `Adjacent sequences: A106864 A106865 A106866 this_sequence A106868 A106869 A106870` `Sequence in context: A087906 A029737 A105891 this_sequence A092175 A072997 A037428`
	KEYWORD	`nonn,easy`
	AUTHOR	`T. D. Noe (noe(AT)sspectra.com), May 09 2005`

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

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