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A089774 Primes of the form 1 followed by powers of 3. 0
11, 13, 19, 127, 181, 16561, 1177147, 110460353203, 1847288609443, 1328256967394537077627, 119088056323407827075424486287615602692670648963, 1123329495011708990974900260817232214728824366796574324605061468433916083 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..12.

EXAMPLE

A000040(91273) = 1177147 = 10^6 + 3^11, therefore 1177147 is a term.

CROSSREFS

Sequence in context: A288878 A102907 A235479 * A257864 A248599 A274243

Adjacent sequences:  A089771 A089772 A089773 * A089775 A089776 A089777

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy, Nov 23 2003

EXTENSIONS

One more term from Reinhard Zumkeller, Oct 18 2004

5 more terms from David Wasserman, Oct 12 2005

STATUS

approved

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Last modified April 22 22:22 EDT 2019. Contains 322378 sequences. (Running on oeis4.)