This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A108254 Numbers n such that little googol - n is prime. 0
 15, 99, 153, 183, 267, 285, 357, 479, 603, 833, 843, 879, 1107, 1125, 1187, 1235, 1289, 1295, 1683, 1757, 1763, 1833, 1863, 1905, 1929, 1943, 1977, 2609, 2699, 2709, 2933, 2973, 2975, 2999, 3027, 3135, 3183, 3237, 3347, 3375, 3485, 3503, 3507, 3555, 3647 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS 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 LINKS _Charles R Greathouse IV_, Home Page [in lieu of email address] FORMULA A little googol = 2^100 PROG (PARI) g(n) = forstep(x=1, n, 2, if(isprime(2^100-x), print1(x", "))) CROSSREFS Sequence in context: A044647 A159528 A108681 * A174383 A000973 A034266 Adjacent sequences:  A108251 A108252 A108253 * A108255 A108256 A108257 KEYWORD nonn,fini,changed AUTHOR Cino Hilliard (hillcino368(AT)gmail.com), Jun 18 2005 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .