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Search: id:A159265
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| A159265 |
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Google primes: primes of the form 379*10^n+9 = 3790...09. |
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+0
2
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| 379009, 379000009, 37900000009, 379000000009, 3790000000000000000000000000000000000009, 37900000000000000000000000000000000000000000009
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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The prime number 379009 rotated by 180 degree reads "GOOGLE". This sequence gives primes of this form with a string of 0's of arbitrary length, as it appears (upside down) on the web site of the search engine to browse the pages of available search results.
No more terms up to n=15000. [From Jason Earls (zevi_35711(AT)yahoo.com), Nov 21 2009]
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REFERENCES
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J. Earls, Mathematical Bliss, Pleroma Publications, 2009, pages 15-17. ASIN: B002ACVZ6O [From Jason Earls (zevi_35711(AT)yahoo.com), Nov 21 2009]
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LINKS
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Jason Earls, Google-Primes, March 2008.
Chris Caldwell (Ed.), Prime curio: 379009.
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FORMULA
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a(n) = 379*10^A159264(n)+9.
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PROGRAM
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(PARI) for( n=0, 99, ispseudoprime(379*10^n+9) & print1(379*10^n+9, ", "))
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CROSSREFS
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Sequence in context: A133975 A133977 A133978 this_sequence A133976 A157843 A157739
Adjacent sequences: A159262 A159263 A159264 this_sequence A159266 A159267 A159268
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KEYWORD
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nonn,word,new
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AUTHOR
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M. F. Hasler (MHasler(AT)univ-ag.fr), Apr 07 2009
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