login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A104912 Numbers k such that the string 9876543210k is prime. 1

%I #9 Sep 08 2022 08:45:17

%S 29,47,61,89,97,217,229,299,361,379,389,419,461,463,467,533,637,643,

%T 649,701,707,733,749,769,791,847,869,923,943,949,997,1067,1103,1169,

%U 1319,1327,1361,1439,1451,1481,1489,1493,1517,1543,1549,1579,1591,1643,1681

%N Numbers k such that the string 9876543210k is prime.

%o (Magma) [ n: n in [1..1750] | IsPrime(Seqint(Intseq(n) cat [0, 1, 2, 3, 4, 5, 6, 7, 8, 9])) ]; // _Vincenzo Librandi_, Feb 02 2011

%Y Cf. A104800, A104913.

%K nonn,base

%O 1,1

%A _Zak Seidov_, Mar 29 2005

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 28 09:04 EDT 2024. Contains 371240 sequences. (Running on oeis4.)