This site is supported by donations to The OEIS Foundation.

 Annual appeal: Please make a donation to keep the OEIS running! Over 6000 articles have referenced us, often saying "we discovered this result with the help of the OEIS". Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A095995 Primes of the form 100n - 1. 2
 199, 499, 599, 1399, 1499, 1699, 1999, 2099, 2399, 2699, 2999, 3299, 3499, 4099, 4799, 4999, 5099, 5399, 6199, 6299, 6599, 6899, 7499, 7699, 8599, 8699, 8999, 9199, 10099, 10399, 10499, 10799, 11299, 11399, 11699, 12799, 12899, 13099, 13399 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS If n is of the form 3x + 1 then 100n - 1 will be of the form 100*3x + 99, that is, a multiple of 3. The factorizations of other nonprime 100n - 1 has a much more complicated pattern. LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..1000 EXAMPLE a(2)=499 because 499 = 100 * 5 - 1. MATHEMATICA Select[ 100Range[134] - 1, PrimeQ[ # ] &] Select[Table[100n-1, {n, 0, 800}], PrimeQ] (* Vincenzo Librandi, Jul 17 2012 *) PROG (MAGMA) [a: n in [0..135] | IsPrime(a) where a is 100*n-1]; // Vincenzo Librandi, Jul 17 2012 CROSSREFS Cf. A062800. Sequence in context: A140632 A142814 A105975 * A159657 A142570 A155507 Adjacent sequences:  A095992 A095993 A095994 * A095996 A095997 A095998 KEYWORD nonn,easy AUTHOR Alonso del Arte, Jul 19 2004 EXTENSIONS Edited by Robert G. Wilson v, Jul 23 2004 STATUS approved

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