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Search: id:A081546
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A081546 Smallest prime which is 1 more than the product of n (not necessarily distinct) composite numbers. +0
4
2, 5, 17, 97, 257, 3457, 40961, 65537, 786433, 5308417, 14155777, 104857601 (list; graph; listen)
OFFSET

0,1

EXAMPLE

a(0) = 1 + 1 = 2, a(3) = 4*4*6 + 1 = 97.

CROSSREFS

Cf. A081545.

Sequence in context: A016121 A026822 A059248 this_sequence A103511 A097980 A074046

Adjacent sequences: A081543 A081544 A081545 this_sequence A081547 A081548 A081549

KEYWORD

hard,nonn

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 01 2003

EXTENSIONS

More terms from Michel ten Voorde (seqfan(AT)tenvoorde.org) Jun 13 2003

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.


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