id:A139897 - OEIS Search Results

Search: id:A139897

Displaying 1-1 of 1 results found.

page 1

Primes of the form 3x^2+80y^2.

+0
3

3, 83, 107, 227, 347, 443, 467, 563, 587, 683, 827, 947, 1163, 1187, 1283, 1307, 1427, 1523, 1667, 1787, 1907, 2003, 2027, 2243, 2267, 2843, 2963, 3083, 3203, 3323, 3347, 3467, 3803, 3923, 3947, 4283, 4523, 4547, 4643, 4787, 5003, 5147 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Discriminant=-960. See A139827 for more information.` `Except for 3, also primes of the form 27x^2+24xy+32y^2. See A140633. - T. D. Noe (noe(AT)sspectra.com), May 19 2008`
	FORMULA	`Except for 3, the primes are congruent to {83, 107} (mod 120).`
	CROSSREFS	`Adjacent sequences: A139894 A139895 A139896 this_sequence A139898 A139899 A139900` `Sequence in context: A037111 A067202 A079652 this_sequence A085318 A101717 A053974`
	KEYWORD	`nonn,easy`
	AUTHOR	`T. D. Noe (noe(AT)sspectra.com), May 02 2008`

page 1

Search completed in 0.002 seconds

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

AT&T Labs Research