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!)
A059701 Primes p such that p^8 reversed is also prime. 1

%I #9 Sep 08 2022 08:45:03

%S 23,139,239,241,409,431,577,647,761,787,1031,1051,1187,1319,1567,1831,

%T 1879,2069,2087,2281,2347,2351,2521,3061,3167,3347,3433,4049,4231,

%U 4283,4363,4447,4999,5437,5669,5689,5869,7499,7607,7681,7687,7841,7907,8039

%N Primes p such that p^8 reversed is also prime.

%H Vincenzo Librandi, <a href="/A059701/b059701.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[ Range[ 11000 ], PrimeQ[ # ] && PrimeQ[ ToExpression[ StringReverse[ ToString[ #^8 ] ] ] ] & ]

%t Select[Prime[Range[1100]],PrimeQ[IntegerReverse[#^8]]&] (* Requires Mathematica version 10 or higher *) (* _Harvey P. Dale_, May 22 2017 *)

%o (Magma) [p: p in PrimesUpTo(8100) | IsPrime(Seqint(Reverse(Intseq(p^8))))]; // _Vincenzo Librandi_, Apr 12 2013

%Y Cf. A059209.

%K base,nonn

%O 1,1

%A _Robert G. Wilson v_, Feb 06 2001

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 August 30 16:58 EDT 2024. Contains 375545 sequences. (Running on oeis4.)