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A102704 Numbers n such that n999 is prime. 0
1, 2, 4, 8, 13, 25, 32, 35, 41, 49, 52, 56, 59, 70, 71, 73, 77, 79, 85, 94, 98, 100, 101, 104, 107, 133, 134, 136, 137, 139, 143, 157, 161, 164, 172, 179, 182, 184, 188, 191, 199, 202, 203, 212, 221, 223, 230, 239, 242, 247 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Also numbers such that 1000*n+999 is prime. - Stefan Steinerberger, Feb 22 2006

LINKS

Table of n, a(n) for n=1..50.

Chris Caldwell, The First 100,008 Primes.

EXAMPLE

If n=1, then n999 = 1999 (prime).

If n=25, then n999 = 25999 (prime).

If n=49, then n999 = 49999 (prime).

MATHEMATICA

Do[If[PrimeQ[1000*n + 999], Print[n]], {n, 1, 250}] (* Stefan Steinerberger, Feb 22 2006 *)

CROSSREFS

Sequence in context: A226060 A262569 A248876 * A196720 A212906 A043774

Adjacent sequences:  A102701 A102702 A102703 * A102705 A102706 A102707

KEYWORD

nonn,base

AUTHOR

Parthasarathy Nambi, Feb 04 2005

EXTENSIONS

More terms from Stefan Steinerberger, Feb 22 2006

STATUS

approved

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Last modified April 11 10:11 EDT 2021. Contains 342886 sequences. (Running on oeis4.)