id:A153077 - OEIS Search Results

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Largest number m such that sigma(m) = A002110(n) where A002110(n) is the product of the first n primes.

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5, 29, 116, 2309, 30029, 272264, 6715161, 154448901, 3696967556, 126321788241, 5984466237725, 304250263527209, 7475863618097156, 495878856926202725, 17521052944725830450, 1749278213298193453469, 65483587607609351045025 (list; graph; listen)

	OFFSET	`2,1`
	COMMENT	`a(24) = 23768741896345550770650537601358309.`
	LINKS	`Ray Chandler, Table of n, a(n) for n=2..21`
	FORMULA	`a(n) = A057637(A002110(n)). - Chandler` `a(A057704(n)) = A002110(A057704(n)) - 1. - Chandler`
	EXAMPLE	`a(9) = 154448901. Sigma(154448901) = A002110(9) = 223092870 = 23571113171923.`
	CROSSREFS	`Cf. A000203, A002110, A153076, A153078.` `Sequence in context: A057721 A085151 A119494 this_sequence A000352 A034332 A146053` `Adjacent sequences: A153074 A153075 A153076 this_sequence A153078 A153079 A153080`
	KEYWORD	`nonn`
	AUTHOR	`Donovan Johnson (donovan.johnson(AT)yahoo.com), Dec 19 2008`
	EXTENSIONS	`Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Dec 28 2008`

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Last modified November 25 13:47 EST 2009. Contains 167481 sequences.

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