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A108254 Numbers n such that little googol - n is prime. 0

%I

%S 15,99,153,183,267,285,357,479,603,833,843,879,1107,1125,1187,1235,

%T 1289,1295,1683,1757,1763,1833,1863,1905,1929,1943,1977,2609,2699,

%U 2709,2933,2973,2975,2999,3027,3135,3183,3237,3347,3375,3485,3503,3507,3555,3647

%N Numbers n such that little googol - n is prime.

%C The sequence is finite with between 1.8559e29 and 1.8562e29 members. Under the Riemann Hypothesis, it has between 1.8560140176089e29 and 1.8560140176096e29 members. - Charles R Greathouse IV Jul 30 2007

%H _Charles R Greathouse IV_, <a href="http://math.crg4.com/">Home Page</a> [in lieu of email address]

%F A little googol = 2^100

%o (PARI) g(n) = forstep(x=1,n,2,if(isprime(2^100-x),print1(x",")))

%K nonn,fini,changed

%O 1,1

%A Cino Hilliard (hillcino368(AT)gmail.com), Jun 18 2005

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Last modified May 24 15:09 EDT 2013. Contains 225624 sequences.