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!)
A139575 Numbers with 47 divisors. 17

%I #16 Dec 15 2020 08:31:11

%S 70368744177664,8862938119652501095929,

%T 142108547152020037174224853515625,

%U 749048330965186233494494102694564493649,801795320536133573571931534665380233173841533961

%N Numbers with 47 divisors.

%C 46th powers of primes. The n-th number with p divisors is equal to the n-th prime raised to power p-1, where p is prime.

%H T. D. Noe, <a href="/A139575/b139575.txt">Table of n, a(n) for n = 1..1000</a>

%H Omar E. Pol, <a href="http://www.polprimos.com">Determinacion geometrica de los numeros primos y perfectos</a>.

%H OEIS Wiki, <a href="https://oeis.org/wiki/Index_entries_for_number_of_divisors">Index entries for number of divisors</a>

%F a(n)=A000040(n)^(47-1)=A000040(n)^46.

%t Prime[Range[9]]^46 (* _Vladimir Joseph Stephan Orlovsky_, May 06 2011 *)

%o (PARI) a(n)=prime(n)^46 \\ _Charles R Greathouse IV_, Jun 19 2016

%Y Cf. A000005, A000040, A001248, A030514, A030516, A030631, A030635, A030637, A137486, A137492, A139571, A139572, A139573, A139574.

%K nonn,easy

%O 1,1

%A _Omar E. Pol_, May 09 2008

%E More terms from _R. J. Mathar_, May 11 2008

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 April 24 06:07 EDT 2024. Contains 371918 sequences. (Running on oeis4.)