The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A101408 Primes p such that p+1000 or p-1000 are also primes. 3

%I

%S 13,19,31,61,97,103,109,151,163,181,193,223,229,277,283,307,367,373,

%T 409,433,439,487,499,523,571,601,607,613,619,709,733,787,811,823,877,

%U 907,997,1013,1019,1031,1039,1061,1063,1069,1087,1097,1103,1109,1129

%N Primes p such that p+1000 or p-1000 are also primes.

%C Primes that differ by 1000.

%H Zak Seidov, <a href="/A101408/b101408.txt">Table of n, a(n) for n = 1..1000</a>

%H Chris Caldwell, <a href="http://primes.utm.edu/lists/small/">List of small primes</a>.

%e 13 and 1013=13+1000 are both primes and therefore are both terms.

%e 1039 and 2039=1039+1000 are both primes and therefore are both terms.

%t Select[Prime[Range[200]], (# > 1000 && PrimeQ[ # - 1000]) || PrimeQ[ # + 1000] &]

%K nonn

%O 1,1

%A _Parthasarathy Nambi_, Jan 15 2005

%E Edited and extended by _Ray Chandler_, Jan 18 2005

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

Last modified January 22 07:39 EST 2020. Contains 331139 sequences. (Running on oeis4.)