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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

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Last modified November 21 05:01 EST 2017. Contains 294988 sequences.