id:A046153 - OEIS Search Results

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Primes of the form m*2^phi(m)-1 with phi(m) the Euler function, in order of increasing m.

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3, 11, 79, 23, 127, 191, 1114111, 1151, 5119, 6143, 654311423, 172031, 88774955854727217151, 1618481116086271, 107221699928436768767, 7421703487487, 120946279055359, 145135534866431, 47287796087390207 (list; graph; listen)

	OFFSET	`1,1`
	MAPLE	`with(numtheory); for n from 1 to 1000 do x := n*2^phi(n)-1: if isprime(x) then print(x): fi:od:`
	CROSSREFS	`Cf. A046154.` `Sequence in context: A127716 A035378 A117765 this_sequence A163856 A099341 A129114` `Adjacent sequences: A046150 A046151 A046152 this_sequence A046154 A046155 A046156`
	KEYWORD	`nonn,nice`
	AUTHOR	`Felice Russo (felice.russo(AT)katamail.com)`
	EXTENSIONS	`More terms from Jud McCranie (j.mccranie(AT)comcast.net), Jan 26 2000`

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.

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