id:A073501 - OEIS Search Results

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Primes p such that the largest prime factor of p^2+1 is less than p.

+0
7

7, 41, 43, 47, 73, 83, 157, 173, 191, 193, 211, 233, 239, 251, 293, 307, 313, 337, 401, 421, 431, 443, 463, 467, 499, 509, 557, 577, 593, 599, 601, 659, 701, 743, 757, 787, 811, 829, 853, 857, 863, 911, 919, 1087, 1109, 1123, 1223, 1229, 1277, 1297, 1301 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Primes p such that the largest prime factor of p+1 is less than p gives A065091, odd primes.`
	MATHEMATICA	<<NumberTheory`NumberTheoryFunctions` Select[Prime[Range[250]], Max[PrimeFactorList[1 + #^2]] < # &] (Ray Chandler, Jan 08 2005)
	CROSSREFS	`Cf. A065091, A073501.` `Sequence in context: A062727 A123747 A023251 this_sequence A080666 A105902 A031909` `Adjacent sequences: A073498 A073499 A073500 this_sequence A073502 A073503 A073504`
	KEYWORD	`easy,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Aug 27 2002`

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.

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