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A159264
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Numbers n such that 379*10^n+9 is a ("Google") probable prime.
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1
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3, 6, 8, 9, 37, 44, 67, 111, 157, 289, 1256, 1602, 2410, 2482, 2868, 3824, 3891, 6595, 8984, 9318, 10274, 45858, 59152, 86691
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OFFSET
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1,1
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COMMENTS
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The prime number 379009 rotated by 180 degree reads "GOOGLE". This sequence gives n such that "GO...OGLE" with n-1 O's is prime.
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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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Table of n, a(n) for n=1..24.
Jason Earls, Google-Primes
Henri & Renaud Lifchitz, PRP Records
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MATHEMATICA
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Select[Range[3, 300], PrimeQ[379*10^# + 9] &] (* Arkadiusz Wesolowski, Oct 05 2011 *)
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PROG
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(PARI) for( n=0, 9e9, ispseudoprime(379*10^n+9) & print1(n", "))
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CROSSREFS
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A159265 lists the actual primes.
Sequence in context: A196370 A005622 A072960 * A055073 A012132 A108769
Adjacent sequences: A159261 A159262 A159263 * A159265 A159266 A159267
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KEYWORD
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nonn
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AUTHOR
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M. F. Hasler, Apr 07 2009
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EXTENSIONS
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a(22)-a(24) from Arkadiusz Wesolowski, Oct 15 2011
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STATUS
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approved
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